Home / 25,878.59-38,790.20-13,386.03

Finding the Fourth Proportional to 25,878.59, 38,790.20 and 13,386.03

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Solution

The fourth proportional to 25,878.59, 38,790.20 and 13,386.03 is: 20,064.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,878.59 : 38,790.20 = 13,386.03 : x
  2. Step 2: Convert to fraction form
    25,878.59/38,790.20 = 13,386.03/x
  3. Step 3: Cross multiply
    25,878.59x = 38,790.20 × 13,386.03
  4. Step 4: Simplify right side
    25,878.59x = 519,246,780.91
  5. Step 5: Solve for x
    x = 519,246,780.91/25,878.59
  6. Step 6: Final answer
    x = 20,064.72

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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.