Home / 55,618.56-83,436.36-18,691.20

Finding the Fourth Proportional to 55,618.56, 83,436.36 and 18,691.20

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Solution

The fourth proportional to 55,618.56, 83,436.36 and 18,691.20 is: 28,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,618.56 : 83,436.36 = 18,691.20 : x
  2. Step 2: Convert to fraction form
    55,618.56/83,436.36 = 18,691.20/x
  3. Step 3: Cross multiply
    55,618.56x = 83,436.36 × 18,691.20
  4. Step 4: Simplify right side
    55,618.56x = 1,559,525,692.03
  5. Step 5: Solve for x
    x = 1,559,525,692.03/55,618.56
  6. Step 6: Final answer
    x = 28,039.66

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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.