Home / 25,658.20-38,417.78-13,320.28

Finding the Fourth Proportional to 25,658.20, 38,417.78 and 13,320.28

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Solution

The fourth proportional to 25,658.20, 38,417.78 and 13,320.28 is: 19,944.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,658.20 : 38,417.78 = 13,320.28 : x
  2. Step 2: Convert to fraction form
    25,658.20/38,417.78 = 13,320.28/x
  3. Step 3: Cross multiply
    25,658.20x = 38,417.78 × 13,320.28
  4. Step 4: Simplify right side
    25,658.20x = 511,735,586.58
  5. Step 5: Solve for x
    x = 511,735,586.58/25,658.20
  6. Step 6: Final answer
    x = 19,944.33

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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.