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Finding the Fourth Proportional to 27,220.13, 40,830.20 and 8,752.13

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Solution

The fourth proportional to 27,220.13, 40,830.20 and 8,752.13 is: 13,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,220.13 : 40,830.20 = 8,752.13 : x
  2. Step 2: Convert to fraction form
    27,220.13/40,830.20 = 8,752.13/x
  3. Step 3: Cross multiply
    27,220.13x = 40,830.20 × 8,752.13
  4. Step 4: Simplify right side
    27,220.13x = 357,350,970.41
  5. Step 5: Solve for x
    x = 357,350,970.41/27,220.13
  6. Step 6: Final answer
    x = 13,128.19

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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.