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Finding the Fourth Proportional to 38,802.80, 58,189.80 and 15,424.40

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Solution

The fourth proportional to 38,802.80, 58,189.80 and 15,424.40 is: 23,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,802.80 : 58,189.80 = 15,424.40 : x
  2. Step 2: Convert to fraction form
    38,802.80/58,189.80 = 15,424.40/x
  3. Step 3: Cross multiply
    38,802.80x = 58,189.80 × 15,424.40
  4. Step 4: Simplify right side
    38,802.80x = 897,542,751.12
  5. Step 5: Solve for x
    x = 897,542,751.12/38,802.80
  6. Step 6: Final answer
    x = 23,130.88

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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.