Home / 15,791.04-21,780.50-10,127.43

Finding the Fourth Proportional to 15,791.04, 21,780.50 and 10,127.43

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Solution

The fourth proportional to 15,791.04, 21,780.50 and 10,127.43 is: 13,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.04 : 21,780.50 = 10,127.43 : x
  2. Step 2: Convert to fraction form
    15,791.04/21,780.50 = 10,127.43/x
  3. Step 3: Cross multiply
    15,791.04x = 21,780.50 × 10,127.43
  4. Step 4: Simplify right side
    15,791.04x = 220,580,438.48
  5. Step 5: Solve for x
    x = 220,580,438.48/15,791.04
  6. Step 6: Final answer
    x = 13,968.71

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1.5x scale

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.