Home / 18,741.22-28,111.79-4,890.22

Finding the Fourth Proportional to 18,741.22, 28,111.79 and 4,890.22

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Solution

The fourth proportional to 18,741.22, 28,111.79 and 4,890.22 is: 7,335.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.22 : 28,111.79 = 4,890.22 : x
  2. Step 2: Convert to fraction form
    18,741.22/28,111.79 = 4,890.22/x
  3. Step 3: Cross multiply
    18,741.22x = 28,111.79 × 4,890.22
  4. Step 4: Simplify right side
    18,741.22x = 137,472,779.64
  5. Step 5: Solve for x
    x = 137,472,779.64/18,741.22
  6. Step 6: Final answer
    x = 7,335.32

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Double scale
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Similar ratio
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1.5x scale

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.