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Finding the Fourth Proportional to 15,739.20, 23,608.80 and 15,134.40

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Solution

The fourth proportional to 15,739.20, 23,608.80 and 15,134.40 is: 22,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.20 : 23,608.80 = 15,134.40 : x
  2. Step 2: Convert to fraction form
    15,739.20/23,608.80 = 15,134.40/x
  3. Step 3: Cross multiply
    15,739.20x = 23,608.80 × 15,134.40
  4. Step 4: Simplify right side
    15,739.20x = 357,305,022.72
  5. Step 5: Solve for x
    x = 357,305,022.72/15,739.20
  6. Step 6: Final answer
    x = 22,701.60

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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.