Home / 20,957.33-31,424.15-19,170.02

Finding the Fourth Proportional to 20,957.33, 31,424.15 and 19,170.02

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Solution

The fourth proportional to 20,957.33, 31,424.15 and 19,170.02 is: 28,744.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.33 : 31,424.15 = 19,170.02 : x
  2. Step 2: Convert to fraction form
    20,957.33/31,424.15 = 19,170.02/x
  3. Step 3: Cross multiply
    20,957.33x = 31,424.15 × 19,170.02
  4. Step 4: Simplify right side
    20,957.33x = 602,401,710.47
  5. Step 5: Solve for x
    x = 602,401,710.47/20,957.33
  6. Step 6: Final answer
    x = 28,744.20

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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.