Home / 31,186.74-46,787.40-21,330.66

Finding the Fourth Proportional to 31,186.74, 46,787.40 and 21,330.66

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Solution

The fourth proportional to 31,186.74, 46,787.40 and 21,330.66 is: 32,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.74 : 46,787.40 = 21,330.66 : x
  2. Step 2: Convert to fraction form
    31,186.74/46,787.40 = 21,330.66/x
  3. Step 3: Cross multiply
    31,186.74x = 46,787.40 × 21,330.66
  4. Step 4: Simplify right side
    31,186.74x = 998,006,121.68
  5. Step 5: Solve for x
    x = 998,006,121.68/31,186.74
  6. Step 6: Final answer
    x = 32,000.98

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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.