Home / 21,123.59-29,174.48-14,397.65

Finding the Fourth Proportional to 21,123.59, 29,174.48 and 14,397.65

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Solution

The fourth proportional to 21,123.59, 29,174.48 and 14,397.65 is: 19,885.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.59 : 29,174.48 = 14,397.65 : x
  2. Step 2: Convert to fraction form
    21,123.59/29,174.48 = 14,397.65/x
  3. Step 3: Cross multiply
    21,123.59x = 29,174.48 × 14,397.65
  4. Step 4: Simplify right side
    21,123.59x = 420,043,897.51
  5. Step 5: Solve for x
    x = 420,043,897.51/21,123.59
  6. Step 6: Final answer
    x = 19,885.07

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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.