Home / 15,654.86-21,603.51-8,581.28

Finding the Fourth Proportional to 15,654.86, 21,603.51 and 8,581.28

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Solution

The fourth proportional to 15,654.86, 21,603.51 and 8,581.28 is: 11,842.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.86 : 21,603.51 = 8,581.28 : x
  2. Step 2: Convert to fraction form
    15,654.86/21,603.51 = 8,581.28/x
  3. Step 3: Cross multiply
    15,654.86x = 21,603.51 × 8,581.28
  4. Step 4: Simplify right side
    15,654.86x = 185,385,660.28
  5. Step 5: Solve for x
    x = 185,385,660.28/15,654.86
  6. Step 6: Final answer
    x = 11,842.06

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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.