Home / 10,931.80-16,397.70-7,432.60

Finding the Fourth Proportional to 10,931.80, 16,397.70 and 7,432.60

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Solution

The fourth proportional to 10,931.80, 16,397.70 and 7,432.60 is: 11,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.80 : 16,397.70 = 7,432.60 : x
  2. Step 2: Convert to fraction form
    10,931.80/16,397.70 = 7,432.60/x
  3. Step 3: Cross multiply
    10,931.80x = 16,397.70 × 7,432.60
  4. Step 4: Simplify right side
    10,931.80x = 121,877,545.02
  5. Step 5: Solve for x
    x = 121,877,545.02/10,931.80
  6. Step 6: Final answer
    x = 11,148.90

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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.