Home / 25,628.40-38,381.04-13,115.52

Finding the Fourth Proportional to 25,628.40, 38,381.04 and 13,115.52

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Solution

The fourth proportional to 25,628.40, 38,381.04 and 13,115.52 is: 19,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,628.40 : 38,381.04 = 13,115.52 : x
  2. Step 2: Convert to fraction form
    25,628.40/38,381.04 = 13,115.52/x
  3. Step 3: Cross multiply
    25,628.40x = 38,381.04 × 13,115.52
  4. Step 4: Simplify right side
    25,628.40x = 503,387,297.74
  5. Step 5: Solve for x
    x = 503,387,297.74/25,628.40
  6. Step 6: Final answer
    x = 19,641.78

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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.