Home / 10,229.80-15,420.28-9,387.40

Finding the Fourth Proportional to 10,229.80, 15,420.28 and 9,387.40

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Solution

The fourth proportional to 10,229.80, 15,420.28 and 9,387.40 is: 14,150.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,229.80 : 15,420.28 = 9,387.40 : x
  2. Step 2: Convert to fraction form
    10,229.80/15,420.28 = 9,387.40/x
  3. Step 3: Cross multiply
    10,229.80x = 15,420.28 × 9,387.40
  4. Step 4: Simplify right side
    10,229.80x = 144,756,336.47
  5. Step 5: Solve for x
    x = 144,756,336.47/10,229.80
  6. Step 6: Final answer
    x = 14,150.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.