Home / 13,731.13-18,948.85-7,763.97

Finding the Fourth Proportional to 13,731.13, 18,948.85 and 7,763.97

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Solution

The fourth proportional to 13,731.13, 18,948.85 and 7,763.97 is: 10,714.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.13 : 18,948.85 = 7,763.97 : x
  2. Step 2: Convert to fraction form
    13,731.13/18,948.85 = 7,763.97/x
  3. Step 3: Cross multiply
    13,731.13x = 18,948.85 × 7,763.97
  4. Step 4: Simplify right side
    13,731.13x = 147,118,283.52
  5. Step 5: Solve for x
    x = 147,118,283.52/13,731.13
  6. Step 6: Final answer
    x = 10,714.22

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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.