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Finding the Fourth Proportional to 20,061.12, 30,068.64 and 10,184.64

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Solution

The fourth proportional to 20,061.12, 30,068.64 and 10,184.64 is: 15,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.12 : 30,068.64 = 10,184.64 : x
  2. Step 2: Convert to fraction form
    20,061.12/30,068.64 = 10,184.64/x
  3. Step 3: Cross multiply
    20,061.12x = 30,068.64 × 10,184.64
  4. Step 4: Simplify right side
    20,061.12x = 306,238,273.69
  5. Step 5: Solve for x
    x = 306,238,273.69/20,061.12
  6. Step 6: Final answer
    x = 15,265.26

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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.