Home / 15,487.55-21,373.28-8,774.13

Finding the Fourth Proportional to 15,487.55, 21,373.28 and 8,774.13

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Solution

The fourth proportional to 15,487.55, 21,373.28 and 8,774.13 is: 12,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.55 : 21,373.28 = 8,774.13 : x
  2. Step 2: Convert to fraction form
    15,487.55/21,373.28 = 8,774.13/x
  3. Step 3: Cross multiply
    15,487.55x = 21,373.28 × 8,774.13
  4. Step 4: Simplify right side
    15,487.55x = 187,531,937.25
  5. Step 5: Solve for x
    x = 187,531,937.25/15,487.55
  6. Step 6: Final answer
    x = 12,108.56

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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.