Home / 25,639.13-38,453.94-20,670.53

Finding the Fourth Proportional to 25,639.13, 38,453.94 and 20,670.53

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Solution

The fourth proportional to 25,639.13, 38,453.94 and 20,670.53 is: 31,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,639.13 : 38,453.94 = 20,670.53 : x
  2. Step 2: Convert to fraction form
    25,639.13/38,453.94 = 20,670.53/x
  3. Step 3: Cross multiply
    25,639.13x = 38,453.94 × 20,670.53
  4. Step 4: Simplify right side
    25,639.13x = 794,863,128.12
  5. Step 5: Solve for x
    x = 794,863,128.12/25,639.13
  6. Step 6: Final answer
    x = 31,001.95

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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.