Home / 21,261.30-31,893.15-6,470.70

Finding the Fourth Proportional to 21,261.30, 31,893.15 and 6,470.70

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Solution

The fourth proportional to 21,261.30, 31,893.15 and 6,470.70 is: 9,706.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.30 : 31,893.15 = 6,470.70 : x
  2. Step 2: Convert to fraction form
    21,261.30/31,893.15 = 6,470.70/x
  3. Step 3: Cross multiply
    21,261.30x = 31,893.15 × 6,470.70
  4. Step 4: Simplify right side
    21,261.30x = 206,371,005.71
  5. Step 5: Solve for x
    x = 206,371,005.71/21,261.30
  6. Step 6: Final answer
    x = 9,706.42

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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.