Home / 25,889.02-38,761.13-21,116.50

Finding the Fourth Proportional to 25,889.02, 38,761.13 and 21,116.50

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Solution

The fourth proportional to 25,889.02, 38,761.13 and 21,116.50 is: 31,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,889.02 : 38,761.13 = 21,116.50 : x
  2. Step 2: Convert to fraction form
    25,889.02/38,761.13 = 21,116.50/x
  3. Step 3: Cross multiply
    25,889.02x = 38,761.13 × 21,116.50
  4. Step 4: Simplify right side
    25,889.02x = 818,499,357.53
  5. Step 5: Solve for x
    x = 818,499,357.53/25,889.02
  6. Step 6: Final answer
    x = 31,615.70

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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.