Home / 15,654.85-21,603.74-8,581.28

Finding the Fourth Proportional to 15,654.85, 21,603.74 and 8,581.28

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Solution

The fourth proportional to 15,654.85, 21,603.74 and 8,581.28 is: 11,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.85 : 21,603.74 = 8,581.28 : x
  2. Step 2: Convert to fraction form
    15,654.85/21,603.74 = 8,581.28/x
  3. Step 3: Cross multiply
    15,654.85x = 21,603.74 × 8,581.28
  4. Step 4: Simplify right side
    15,654.85x = 185,387,699.08
  5. Step 5: Solve for x
    x = 185,387,699.08/15,654.85
  6. Step 6: Final answer
    x = 11,842.19

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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.