Home / 25,105.15-34,690.95-18,287.30

Finding the Fourth Proportional to 25,105.15, 34,690.95 and 18,287.30

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Solution

The fourth proportional to 25,105.15, 34,690.95 and 18,287.30 is: 25,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,105.15 : 34,690.95 = 18,287.30 : x
  2. Step 2: Convert to fraction form
    25,105.15/34,690.95 = 18,287.30/x
  3. Step 3: Cross multiply
    25,105.15x = 34,690.95 × 18,287.30
  4. Step 4: Simplify right side
    25,105.15x = 634,403,896.66
  5. Step 5: Solve for x
    x = 634,403,896.66/25,105.15
  6. Step 6: Final answer
    x = 25,269.87

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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.