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Finding the Fourth Proportional to 15,174.80, 22,762.20 and 5,310.80

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Solution

The fourth proportional to 15,174.80, 22,762.20 and 5,310.80 is: 7,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.80 : 22,762.20 = 5,310.80 : x
  2. Step 2: Convert to fraction form
    15,174.80/22,762.20 = 5,310.80/x
  3. Step 3: Cross multiply
    15,174.80x = 22,762.20 × 5,310.80
  4. Step 4: Simplify right side
    15,174.80x = 120,885,491.76
  5. Step 5: Solve for x
    x = 120,885,491.76/15,174.80
  6. Step 6: Final answer
    x = 7,966.20

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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.