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Finding the Fourth Proportional to 10,061.20, 15,094.20 and 5,131.60

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Solution

The fourth proportional to 10,061.20, 15,094.20 and 5,131.60 is: 7,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,061.20 : 15,094.20 = 5,131.60 : x
  2. Step 2: Convert to fraction form
    10,061.20/15,094.20 = 5,131.60/x
  3. Step 3: Cross multiply
    10,061.20x = 15,094.20 × 5,131.60
  4. Step 4: Simplify right side
    10,061.20x = 77,457,396.72
  5. Step 5: Solve for x
    x = 77,457,396.72/10,061.20
  6. Step 6: Final answer
    x = 7,698.62

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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.