Home / 21,373.13-29,494.04-12,420.56

Finding the Fourth Proportional to 21,373.13, 29,494.04 and 12,420.56

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Solution

The fourth proportional to 21,373.13, 29,494.04 and 12,420.56 is: 17,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.13 : 29,494.04 = 12,420.56 : x
  2. Step 2: Convert to fraction form
    21,373.13/29,494.04 = 12,420.56/x
  3. Step 3: Cross multiply
    21,373.13x = 29,494.04 × 12,420.56
  4. Step 4: Simplify right side
    21,373.13x = 366,332,283.89
  5. Step 5: Solve for x
    x = 366,332,283.89/21,373.13
  6. Step 6: Final answer
    x = 17,139.86

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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.