Home / 28,459.72-42,879.31-25,689.52

Finding the Fourth Proportional to 28,459.72, 42,879.31 and 25,689.52

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Solution

The fourth proportional to 28,459.72, 42,879.31 and 25,689.52 is: 38,705.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.72 : 42,879.31 = 25,689.52 : x
  2. Step 2: Convert to fraction form
    28,459.72/42,879.31 = 25,689.52/x
  3. Step 3: Cross multiply
    28,459.72x = 42,879.31 × 25,689.52
  4. Step 4: Simplify right side
    28,459.72x = 1,101,548,891.83
  5. Step 5: Solve for x
    x = 1,101,548,891.83/28,459.72
  6. Step 6: Final answer
    x = 38,705.54

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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.