Home / 18,436.55-27,779.19-15,221.66

Finding the Fourth Proportional to 18,436.55, 27,779.19 and 15,221.66

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Solution

The fourth proportional to 18,436.55, 27,779.19 and 15,221.66 is: 22,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.55 : 27,779.19 = 15,221.66 : x
  2. Step 2: Convert to fraction form
    18,436.55/27,779.19 = 15,221.66/x
  3. Step 3: Cross multiply
    18,436.55x = 27,779.19 × 15,221.66
  4. Step 4: Simplify right side
    18,436.55x = 422,845,189.28
  5. Step 5: Solve for x
    x = 422,845,189.28/18,436.55
  6. Step 6: Final answer
    x = 22,935.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.