Home / 10,931.40-16,397.10-6,249.60

Finding the Fourth Proportional to 10,931.40, 16,397.10 and 6,249.60

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Solution

The fourth proportional to 10,931.40, 16,397.10 and 6,249.60 is: 9,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.40 : 16,397.10 = 6,249.60 : x
  2. Step 2: Convert to fraction form
    10,931.40/16,397.10 = 6,249.60/x
  3. Step 3: Cross multiply
    10,931.40x = 16,397.10 × 6,249.60
  4. Step 4: Simplify right side
    10,931.40x = 102,475,316.16
  5. Step 5: Solve for x
    x = 102,475,316.16/10,931.40
  6. Step 6: Final answer
    x = 9,374.40

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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.