Home / 20,017.04-29,981.82-10,139.36

Finding the Fourth Proportional to 20,017.04, 29,981.82 and 10,139.36

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Solution

The fourth proportional to 20,017.04, 29,981.82 and 10,139.36 is: 15,186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.04 : 29,981.82 = 10,139.36 : x
  2. Step 2: Convert to fraction form
    20,017.04/29,981.82 = 10,139.36/x
  3. Step 3: Cross multiply
    20,017.04x = 29,981.82 × 10,139.36
  4. Step 4: Simplify right side
    20,017.04x = 303,996,466.44
  5. Step 5: Solve for x
    x = 303,996,466.44/20,017.04
  6. Step 6: Final answer
    x = 15,186.88

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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.