Home / 15,654.78-21,603.51-8,580.96

Finding the Fourth Proportional to 15,654.78, 21,603.51 and 8,580.96

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Solution

The fourth proportional to 15,654.78, 21,603.51 and 8,580.96 is: 11,841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.78 : 21,603.51 = 8,580.96 : x
  2. Step 2: Convert to fraction form
    15,654.78/21,603.51 = 8,580.96/x
  3. Step 3: Cross multiply
    15,654.78x = 21,603.51 × 8,580.96
  4. Step 4: Simplify right side
    15,654.78x = 185,378,855.17
  5. Step 5: Solve for x
    x = 185,378,855.17/15,654.78
  6. Step 6: Final answer
    x = 11,841.68

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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.