Home / 21,360.14-29,478.30-14,177.42

Finding the Fourth Proportional to 21,360.14, 29,478.30 and 14,177.42

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Solution

The fourth proportional to 21,360.14, 29,478.30 and 14,177.42 is: 19,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.14 : 29,478.30 = 14,177.42 : x
  2. Step 2: Convert to fraction form
    21,360.14/29,478.30 = 14,177.42/x
  3. Step 3: Cross multiply
    21,360.14x = 29,478.30 × 14,177.42
  4. Step 4: Simplify right side
    21,360.14x = 417,926,239.99
  5. Step 5: Solve for x
    x = 417,926,239.99/21,360.14
  6. Step 6: Final answer
    x = 19,565.71

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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.