Home / 25,423.20-38,159.10-21,729.60

Finding the Fourth Proportional to 25,423.20, 38,159.10 and 21,729.60

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Solution

The fourth proportional to 25,423.20, 38,159.10 and 21,729.60 is: 32,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,423.20 : 38,159.10 = 21,729.60 : x
  2. Step 2: Convert to fraction form
    25,423.20/38,159.10 = 21,729.60/x
  3. Step 3: Cross multiply
    25,423.20x = 38,159.10 × 21,729.60
  4. Step 4: Simplify right side
    25,423.20x = 829,181,979.36
  5. Step 5: Solve for x
    x = 829,181,979.36/25,423.20
  6. Step 6: Final answer
    x = 32,615.17

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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.