Home / 21,875.61-30,177.85-14,318.62

Finding the Fourth Proportional to 21,875.61, 30,177.85 and 14,318.62

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Solution

The fourth proportional to 21,875.61, 30,177.85 and 14,318.62 is: 19,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.61 : 30,177.85 = 14,318.62 : x
  2. Step 2: Convert to fraction form
    21,875.61/30,177.85 = 14,318.62/x
  3. Step 3: Cross multiply
    21,875.61x = 30,177.85 × 14,318.62
  4. Step 4: Simplify right side
    21,875.61x = 432,105,082.17
  5. Step 5: Solve for x
    x = 432,105,082.17/21,875.61
  6. Step 6: Final answer
    x = 19,752.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.