Home / 20,158.49-27,755.18-18,290.15

Finding the Fourth Proportional to 20,158.49, 27,755.18 and 18,290.15

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Solution

The fourth proportional to 20,158.49, 27,755.18 and 18,290.15 is: 25,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.49 : 27,755.18 = 18,290.15 : x
  2. Step 2: Convert to fraction form
    20,158.49/27,755.18 = 18,290.15/x
  3. Step 3: Cross multiply
    20,158.49x = 27,755.18 × 18,290.15
  4. Step 4: Simplify right side
    20,158.49x = 507,646,175.25
  5. Step 5: Solve for x
    x = 507,646,175.25/20,158.49
  6. Step 6: Final answer
    x = 25,182.75

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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.