Home / 25,471.87-35,078.50-18,387.07

Finding the Fourth Proportional to 25,471.87, 35,078.50 and 18,387.07

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Solution

The fourth proportional to 25,471.87, 35,078.50 and 18,387.07 is: 25,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,471.87 : 35,078.50 = 18,387.07 : x
  2. Step 2: Convert to fraction form
    25,471.87/35,078.50 = 18,387.07/x
  3. Step 3: Cross multiply
    25,471.87x = 35,078.50 × 18,387.07
  4. Step 4: Simplify right side
    25,471.87x = 644,990,835.00
  5. Step 5: Solve for x
    x = 644,990,835.00/25,471.87
  6. Step 6: Final answer
    x = 25,321.69

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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.