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Finding the Fourth Proportional to 25,953.60, 38,930.40 and 17,659.20

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Solution

The fourth proportional to 25,953.60, 38,930.40 and 17,659.20 is: 26,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.60 : 38,930.40 = 17,659.20 : x
  2. Step 2: Convert to fraction form
    25,953.60/38,930.40 = 17,659.20/x
  3. Step 3: Cross multiply
    25,953.60x = 38,930.40 × 17,659.20
  4. Step 4: Simplify right side
    25,953.60x = 687,479,719.68
  5. Step 5: Solve for x
    x = 687,479,719.68/25,953.60
  6. Step 6: Final answer
    x = 26,488.80

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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.