Home / 19,902.24-27,436-13,915.28

Finding the Fourth Proportional to 19,902.24, 27,436 and 13,915.28

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Solution

The fourth proportional to 19,902.24, 27,436 and 13,915.28 is: 19,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.24 : 27,436 = 13,915.28 : x
  2. Step 2: Convert to fraction form
    19,902.24/27,436 = 13,915.28/x
  3. Step 3: Cross multiply
    19,902.24x = 27,436 × 13,915.28
  4. Step 4: Simplify right side
    19,902.24x = 381,779,622.08
  5. Step 5: Solve for x
    x = 381,779,622.08/19,902.24
  6. Step 6: Final answer
    x = 19,182.75

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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.