Home / 19,902.06-27,442.40-15,354.38

Finding the Fourth Proportional to 19,902.06, 27,442.40 and 15,354.38

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Solution

The fourth proportional to 19,902.06, 27,442.40 and 15,354.38 is: 21,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.06 : 27,442.40 = 15,354.38 : x
  2. Step 2: Convert to fraction form
    19,902.06/27,442.40 = 15,354.38/x
  3. Step 3: Cross multiply
    19,902.06x = 27,442.40 × 15,354.38
  4. Step 4: Simplify right side
    19,902.06x = 421,361,037.71
  5. Step 5: Solve for x
    x = 421,361,037.71/19,902.06
  6. Step 6: Final answer
    x = 21,171.73

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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.