Home / 25,678.83-38,538.33-13,198.35

Finding the Fourth Proportional to 25,678.83, 38,538.33 and 13,198.35

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Solution

The fourth proportional to 25,678.83, 38,538.33 and 13,198.35 is: 19,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,678.83 : 38,538.33 = 13,198.35 : x
  2. Step 2: Convert to fraction form
    25,678.83/38,538.33 = 13,198.35/x
  3. Step 3: Cross multiply
    25,678.83x = 38,538.33 × 13,198.35
  4. Step 4: Simplify right side
    25,678.83x = 508,642,367.76
  5. Step 5: Solve for x
    x = 508,642,367.76/25,678.83
  6. Step 6: Final answer
    x = 19,807.85

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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.