Home / 21,864.99-30,141.42-15,471.73

Finding the Fourth Proportional to 21,864.99, 30,141.42 and 15,471.73

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Solution

The fourth proportional to 21,864.99, 30,141.42 and 15,471.73 is: 21,328.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.99 : 30,141.42 = 15,471.73 : x
  2. Step 2: Convert to fraction form
    21,864.99/30,141.42 = 15,471.73/x
  3. Step 3: Cross multiply
    21,864.99x = 30,141.42 × 15,471.73
  4. Step 4: Simplify right side
    21,864.99x = 466,339,976.49
  5. Step 5: Solve for x
    x = 466,339,976.49/21,864.99
  6. Step 6: Final answer
    x = 21,328.16

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Double scale
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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.