Home / 10,420,111.80-15,630,167.70-7,018,889.40

Finding the Fourth Proportional to 10,420,111.80, 15,630,167.70 and 7,018,889.40

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Solution

The fourth proportional to 10,420,111.80, 15,630,167.70 and 7,018,889.40 is: 10,528,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420,111.80 : 15,630,167.70 = 7,018,889.40 : x
  2. Step 2: Convert to fraction form
    10,420,111.80/15,630,167.70 = 7,018,889.40/x
  3. Step 3: Cross multiply
    10,420,111.80x = 15,630,167.70 × 7,018,889.40
  4. Step 4: Simplify right side
    10,420,111.80x = 109,706,418,389,752.38
  5. Step 5: Solve for x
    x = 109,706,418,389,752.38/10,420,111.80
  6. Step 6: Final answer
    x = 10,528,334.10

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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.