Home / 18,490.15-25,535.04-11,778.80

Finding the Fourth Proportional to 18,490.15, 25,535.04 and 11,778.80

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Solution

The fourth proportional to 18,490.15, 25,535.04 and 11,778.80 is: 16,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.15 : 25,535.04 = 11,778.80 : x
  2. Step 2: Convert to fraction form
    18,490.15/25,535.04 = 11,778.80/x
  3. Step 3: Cross multiply
    18,490.15x = 25,535.04 × 11,778.80
  4. Step 4: Simplify right side
    18,490.15x = 300,772,129.15
  5. Step 5: Solve for x
    x = 300,772,129.15/18,490.15
  6. Step 6: Final answer
    x = 16,266.62

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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.