Home / 10,265.20-15,397.80-4,428.40

Finding the Fourth Proportional to 10,265.20, 15,397.80 and 4,428.40

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Solution

The fourth proportional to 10,265.20, 15,397.80 and 4,428.40 is: 6,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,265.20 : 15,397.80 = 4,428.40 : x
  2. Step 2: Convert to fraction form
    10,265.20/15,397.80 = 4,428.40/x
  3. Step 3: Cross multiply
    10,265.20x = 15,397.80 × 4,428.40
  4. Step 4: Simplify right side
    10,265.20x = 68,187,617.52
  5. Step 5: Solve for x
    x = 68,187,617.52/10,265.20
  6. Step 6: Final answer
    x = 6,642.60

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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.