Home / 21,301.50-29,395.80-11,870.04

Finding the Fourth Proportional to 21,301.50, 29,395.80 and 11,870.04

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Solution

The fourth proportional to 21,301.50, 29,395.80 and 11,870.04 is: 16,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.50 : 29,395.80 = 11,870.04 : x
  2. Step 2: Convert to fraction form
    21,301.50/29,395.80 = 11,870.04/x
  3. Step 3: Cross multiply
    21,301.50x = 29,395.80 × 11,870.04
  4. Step 4: Simplify right side
    21,301.50x = 348,929,321.83
  5. Step 5: Solve for x
    x = 348,929,321.83/21,301.50
  6. Step 6: Final answer
    x = 16,380.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.