Home / 28,568.16-39,402.80-18,488.82

Finding the Fourth Proportional to 28,568.16, 39,402.80 and 18,488.82

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Solution

The fourth proportional to 28,568.16, 39,402.80 and 18,488.82 is: 25,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.16 : 39,402.80 = 18,488.82 : x
  2. Step 2: Convert to fraction form
    28,568.16/39,402.80 = 18,488.82/x
  3. Step 3: Cross multiply
    28,568.16x = 39,402.80 × 18,488.82
  4. Step 4: Simplify right side
    28,568.16x = 728,511,401.35
  5. Step 5: Solve for x
    x = 728,511,401.35/28,568.16
  6. Step 6: Final answer
    x = 25,500.82

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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.