Home / 21,255.18-29,332.31-13,301.93

Finding the Fourth Proportional to 21,255.18, 29,332.31 and 13,301.93

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Solution

The fourth proportional to 21,255.18, 29,332.31 and 13,301.93 is: 18,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.18 : 29,332.31 = 13,301.93 : x
  2. Step 2: Convert to fraction form
    21,255.18/29,332.31 = 13,301.93/x
  3. Step 3: Cross multiply
    21,255.18x = 29,332.31 × 13,301.93
  4. Step 4: Simplify right side
    21,255.18x = 390,176,121.19
  5. Step 5: Solve for x
    x = 390,176,121.19/21,255.18
  6. Step 6: Final answer
    x = 18,356.75

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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.