Home / 10,931.92-16,397.88-3,140.74

Finding the Fourth Proportional to 10,931.92, 16,397.88 and 3,140.74

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Solution

The fourth proportional to 10,931.92, 16,397.88 and 3,140.74 is: 4,711.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.92 : 16,397.88 = 3,140.74 : x
  2. Step 2: Convert to fraction form
    10,931.92/16,397.88 = 3,140.74/x
  3. Step 3: Cross multiply
    10,931.92x = 16,397.88 × 3,140.74
  4. Step 4: Simplify right side
    10,931.92x = 51,501,477.63
  5. Step 5: Solve for x
    x = 51,501,477.63/10,931.92
  6. Step 6: Final answer
    x = 4,711.11

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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.