Home / 30,744.28-42,431.20-18,001.36

Finding the Fourth Proportional to 30,744.28, 42,431.20 and 18,001.36

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Solution

The fourth proportional to 30,744.28, 42,431.20 and 18,001.36 is: 24,844.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,744.28 : 42,431.20 = 18,001.36 : x
  2. Step 2: Convert to fraction form
    30,744.28/42,431.20 = 18,001.36/x
  3. Step 3: Cross multiply
    30,744.28x = 42,431.20 × 18,001.36
  4. Step 4: Simplify right side
    30,744.28x = 763,819,306.43
  5. Step 5: Solve for x
    x = 763,819,306.43/30,744.28
  6. Step 6: Final answer
    x = 24,844.27

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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.