Home / 28,279.26-38,989.35-17,665.02

Finding the Fourth Proportional to 28,279.26, 38,989.35 and 17,665.02

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Solution

The fourth proportional to 28,279.26, 38,989.35 and 17,665.02 is: 24,355.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.26 : 38,989.35 = 17,665.02 : x
  2. Step 2: Convert to fraction form
    28,279.26/38,989.35 = 17,665.02/x
  3. Step 3: Cross multiply
    28,279.26x = 38,989.35 × 17,665.02
  4. Step 4: Simplify right side
    28,279.26x = 688,747,647.54
  5. Step 5: Solve for x
    x = 688,747,647.54/28,279.26
  6. Step 6: Final answer
    x = 24,355.22

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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.