Home / 21,707.02-29,957.19-12,147.81

Finding the Fourth Proportional to 21,707.02, 29,957.19 and 12,147.81

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Solution

The fourth proportional to 21,707.02, 29,957.19 and 12,147.81 is: 16,764.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.02 : 29,957.19 = 12,147.81 : x
  2. Step 2: Convert to fraction form
    21,707.02/29,957.19 = 12,147.81/x
  3. Step 3: Cross multiply
    21,707.02x = 29,957.19 × 12,147.81
  4. Step 4: Simplify right side
    21,707.02x = 363,914,252.25
  5. Step 5: Solve for x
    x = 363,914,252.25/21,707.02
  6. Step 6: Final answer
    x = 16,764.82

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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.