Home / 15,318.41-21,123.83-14,425.47

Finding the Fourth Proportional to 15,318.41, 21,123.83 and 14,425.47

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Solution

The fourth proportional to 15,318.41, 21,123.83 and 14,425.47 is: 19,892.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.41 : 21,123.83 = 14,425.47 : x
  2. Step 2: Convert to fraction form
    15,318.41/21,123.83 = 14,425.47/x
  3. Step 3: Cross multiply
    15,318.41x = 21,123.83 × 14,425.47
  4. Step 4: Simplify right side
    15,318.41x = 304,721,103.82
  5. Step 5: Solve for x
    x = 304,721,103.82/15,318.41
  6. Step 6: Final answer
    x = 19,892.48

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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.