Home / 15,654.42-21,603.29-8,580.69

Finding the Fourth Proportional to 15,654.42, 21,603.29 and 8,580.69

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Solution

The fourth proportional to 15,654.42, 21,603.29 and 8,580.69 is: 11,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.42 : 21,603.29 = 8,580.69 : x
  2. Step 2: Convert to fraction form
    15,654.42/21,603.29 = 8,580.69/x
  3. Step 3: Cross multiply
    15,654.42x = 21,603.29 × 8,580.69
  4. Step 4: Simplify right side
    15,654.42x = 185,371,091.57
  5. Step 5: Solve for x
    x = 185,371,091.57/15,654.42
  6. Step 6: Final answer
    x = 11,841.45

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Half scale
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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.