Home / 12,931.71-19,400.81-4,166.43

Finding the Fourth Proportional to 12,931.71, 19,400.81 and 4,166.43

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Solution

The fourth proportional to 12,931.71, 19,400.81 and 4,166.43 is: 6,250.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.71 : 19,400.81 = 4,166.43 : x
  2. Step 2: Convert to fraction form
    12,931.71/19,400.81 = 4,166.43/x
  3. Step 3: Cross multiply
    12,931.71x = 19,400.81 × 4,166.43
  4. Step 4: Simplify right side
    12,931.71x = 80,832,095.98
  5. Step 5: Solve for x
    x = 80,832,095.98/12,931.71
  6. Step 6: Final answer
    x = 6,250.69

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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.