Home / 21,186.48-31,757.04-13,397.52

Finding the Fourth Proportional to 21,186.48, 31,757.04 and 13,397.52

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Solution

The fourth proportional to 21,186.48, 31,757.04 and 13,397.52 is: 20,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.48 : 31,757.04 = 13,397.52 : x
  2. Step 2: Convert to fraction form
    21,186.48/31,757.04 = 13,397.52/x
  3. Step 3: Cross multiply
    21,186.48x = 31,757.04 × 13,397.52
  4. Step 4: Simplify right side
    21,186.48x = 425,465,578.54
  5. Step 5: Solve for x
    x = 425,465,578.54/21,186.48
  6. Step 6: Final answer
    x = 20,081.94

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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.