Home / 15,553.21-21,463.55-8,479.68

Finding the Fourth Proportional to 15,553.21, 21,463.55 and 8,479.68

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Solution

The fourth proportional to 15,553.21, 21,463.55 and 8,479.68 is: 11,702.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.21 : 21,463.55 = 8,479.68 : x
  2. Step 2: Convert to fraction form
    15,553.21/21,463.55 = 8,479.68/x
  3. Step 3: Cross multiply
    15,553.21x = 21,463.55 × 8,479.68
  4. Step 4: Simplify right side
    15,553.21x = 182,003,885.95
  5. Step 5: Solve for x
    x = 182,003,885.95/15,553.21
  6. Step 6: Final answer
    x = 11,702.02

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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.