Home / 10,420,068.80-15,630,103.20-7,018,846.40

Finding the Fourth Proportional to 10,420,068.80, 15,630,103.20 and 7,018,846.40

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Solution

The fourth proportional to 10,420,068.80, 15,630,103.20 and 7,018,846.40 is: 10,528,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420,068.80 : 15,630,103.20 = 7,018,846.40 : x
  2. Step 2: Convert to fraction form
    10,420,068.80/15,630,103.20 = 7,018,846.40/x
  3. Step 3: Cross multiply
    10,420,068.80x = 15,630,103.20 × 7,018,846.40
  4. Step 4: Simplify right side
    10,420,068.80x = 109,705,293,576,948.48
  5. Step 5: Solve for x
    x = 109,705,293,576,948.48/10,420,068.80
  6. Step 6: Final answer
    x = 10,528,269.60

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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.