Home / 10,420,108.80-15,630,163.20-7,018,886.40

Finding the Fourth Proportional to 10,420,108.80, 15,630,163.20 and 7,018,886.40

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Solution

The fourth proportional to 10,420,108.80, 15,630,163.20 and 7,018,886.40 is: 10,528,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420,108.80 : 15,630,163.20 = 7,018,886.40 : x
  2. Step 2: Convert to fraction form
    10,420,108.80/15,630,163.20 = 7,018,886.40/x
  3. Step 3: Cross multiply
    10,420,108.80x = 15,630,163.20 × 7,018,886.40
  4. Step 4: Simplify right side
    10,420,108.80x = 109,706,339,914,260.48
  5. Step 5: Solve for x
    x = 109,706,339,914,260.48/10,420,108.80
  6. Step 6: Final answer
    x = 10,528,329.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.