Home / 10,931.40-16,397.10-9,295.20

Finding the Fourth Proportional to 10,931.40, 16,397.10 and 9,295.20

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Solution

The fourth proportional to 10,931.40, 16,397.10 and 9,295.20 is: 13,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.40 : 16,397.10 = 9,295.20 : x
  2. Step 2: Convert to fraction form
    10,931.40/16,397.10 = 9,295.20/x
  3. Step 3: Cross multiply
    10,931.40x = 16,397.10 × 9,295.20
  4. Step 4: Simplify right side
    10,931.40x = 152,414,323.92
  5. Step 5: Solve for x
    x = 152,414,323.92/10,931.40
  6. Step 6: Final answer
    x = 13,942.80

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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.