Home / 28,147.56-38,826.70-18,587.53

Finding the Fourth Proportional to 28,147.56, 38,826.70 and 18,587.53

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Solution

The fourth proportional to 28,147.56, 38,826.70 and 18,587.53 is: 25,639.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.56 : 38,826.70 = 18,587.53 : x
  2. Step 2: Convert to fraction form
    28,147.56/38,826.70 = 18,587.53/x
  3. Step 3: Cross multiply
    28,147.56x = 38,826.70 × 18,587.53
  4. Step 4: Simplify right side
    28,147.56x = 721,692,451.05
  5. Step 5: Solve for x
    x = 721,692,451.05/28,147.56
  6. Step 6: Final answer
    x = 25,639.61

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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.