Home / 21,251.17-31,875.13-7,400.17

Finding the Fourth Proportional to 21,251.17, 31,875.13 and 7,400.17

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Solution

The fourth proportional to 21,251.17, 31,875.13 and 7,400.17 is: 11,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.17 : 31,875.13 = 7,400.17 : x
  2. Step 2: Convert to fraction form
    21,251.17/31,875.13 = 7,400.17/x
  3. Step 3: Cross multiply
    21,251.17x = 31,875.13 × 7,400.17
  4. Step 4: Simplify right side
    21,251.17x = 235,881,380.77
  5. Step 5: Solve for x
    x = 235,881,380.77/21,251.17
  6. Step 6: Final answer
    x = 11,099.69

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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.