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Finding the Fourth Proportional to 15,102.54, 20,841.08 and 8,388

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Solution

The fourth proportional to 15,102.54, 20,841.08 and 8,388 is: 11,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.54 : 20,841.08 = 8,388 : x
  2. Step 2: Convert to fraction form
    15,102.54/20,841.08 = 8,388/x
  3. Step 3: Cross multiply
    15,102.54x = 20,841.08 × 8,388
  4. Step 4: Simplify right side
    15,102.54x = 174,814,937.10
  5. Step 5: Solve for x
    x = 174,814,937.10/15,102.54
  6. Step 6: Final answer
    x = 11,575.20

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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.