Home / 10,931.96-16,397.94-3,140.76

Finding the Fourth Proportional to 10,931.96, 16,397.94 and 3,140.76

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Solution

The fourth proportional to 10,931.96, 16,397.94 and 3,140.76 is: 4,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.96 : 16,397.94 = 3,140.76 : x
  2. Step 2: Convert to fraction form
    10,931.96/16,397.94 = 3,140.76/x
  3. Step 3: Cross multiply
    10,931.96x = 16,397.94 × 3,140.76
  4. Step 4: Simplify right side
    10,931.96x = 51,501,994.03
  5. Step 5: Solve for x
    x = 51,501,994.03/10,931.96
  6. Step 6: Final answer
    x = 4,711.14

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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.