Home / 10,931.61-16,405.29-7,412.91

Finding the Fourth Proportional to 10,931.61, 16,405.29 and 7,412.91

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Solution

The fourth proportional to 10,931.61, 16,405.29 and 7,412.91 is: 11,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.61 : 16,405.29 = 7,412.91 : x
  2. Step 2: Convert to fraction form
    10,931.61/16,405.29 = 7,412.91/x
  3. Step 3: Cross multiply
    10,931.61x = 16,405.29 × 7,412.91
  4. Step 4: Simplify right side
    10,931.61x = 121,610,938.29
  5. Step 5: Solve for x
    x = 121,610,938.29/10,931.61
  6. Step 6: Final answer
    x = 11,124.71

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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.