Home / 28,178.88-38,899.36-17,974.24

Finding the Fourth Proportional to 28,178.88, 38,899.36 and 17,974.24

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Solution

The fourth proportional to 28,178.88, 38,899.36 and 17,974.24 is: 24,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.88 : 38,899.36 = 17,974.24 : x
  2. Step 2: Convert to fraction form
    28,178.88/38,899.36 = 17,974.24/x
  3. Step 3: Cross multiply
    28,178.88x = 38,899.36 × 17,974.24
  4. Step 4: Simplify right side
    28,178.88x = 699,186,432.49
  5. Step 5: Solve for x
    x = 699,186,432.49/28,178.88
  6. Step 6: Final answer
    x = 24,812.43

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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.