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Finding the Fourth Proportional to 15,110.52, 20,852.16 and 8,822.90

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Solution

The fourth proportional to 15,110.52, 20,852.16 and 8,822.90 is: 12,175.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.52 : 20,852.16 = 8,822.90 : x
  2. Step 2: Convert to fraction form
    15,110.52/20,852.16 = 8,822.90/x
  3. Step 3: Cross multiply
    15,110.52x = 20,852.16 × 8,822.90
  4. Step 4: Simplify right side
    15,110.52x = 183,976,522.46
  5. Step 5: Solve for x
    x = 183,976,522.46/15,110.52
  6. Step 6: Final answer
    x = 12,175.39

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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.