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Finding the Fourth Proportional to 10,875.60, 16,348.20 and 10,105.20

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Solution

The fourth proportional to 10,875.60, 16,348.20 and 10,105.20 is: 15,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.60 : 16,348.20 = 10,105.20 : x
  2. Step 2: Convert to fraction form
    10,875.60/16,348.20 = 10,105.20/x
  3. Step 3: Cross multiply
    10,875.60x = 16,348.20 × 10,105.20
  4. Step 4: Simplify right side
    10,875.60x = 165,201,830.64
  5. Step 5: Solve for x
    x = 165,201,830.64/10,875.60
  6. Step 6: Final answer
    x = 15,190.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.