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Finding the Fourth Proportional to 15,034.68, 20,748.05 and 8,320.29

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Solution

The fourth proportional to 15,034.68, 20,748.05 and 8,320.29 is: 11,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.68 : 20,748.05 = 8,320.29 : x
  2. Step 2: Convert to fraction form
    15,034.68/20,748.05 = 8,320.29/x
  3. Step 3: Cross multiply
    15,034.68x = 20,748.05 × 8,320.29
  4. Step 4: Simplify right side
    15,034.68x = 172,629,792.93
  5. Step 5: Solve for x
    x = 172,629,792.93/15,034.68
  6. Step 6: Final answer
    x = 11,482.11

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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.