Home / 28,832.32-39,788.31-18,230.68

Finding the Fourth Proportional to 28,832.32, 39,788.31 and 18,230.68

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Solution

The fourth proportional to 28,832.32, 39,788.31 and 18,230.68 is: 25,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,832.32 : 39,788.31 = 18,230.68 : x
  2. Step 2: Convert to fraction form
    28,832.32/39,788.31 = 18,230.68/x
  3. Step 3: Cross multiply
    28,832.32x = 39,788.31 × 18,230.68
  4. Step 4: Simplify right side
    28,832.32x = 725,367,947.35
  5. Step 5: Solve for x
    x = 725,367,947.35/28,832.32
  6. Step 6: Final answer
    x = 25,158.15

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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.