Home / 18,315.64-25,266.10-11,589.71

Finding the Fourth Proportional to 18,315.64, 25,266.10 and 11,589.71

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Solution

The fourth proportional to 18,315.64, 25,266.10 and 11,589.71 is: 15,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.64 : 25,266.10 = 11,589.71 : x
  2. Step 2: Convert to fraction form
    18,315.64/25,266.10 = 11,589.71/x
  3. Step 3: Cross multiply
    18,315.64x = 25,266.10 × 11,589.71
  4. Step 4: Simplify right side
    18,315.64x = 292,826,771.83
  5. Step 5: Solve for x
    x = 292,826,771.83/18,315.64
  6. Step 6: Final answer
    x = 15,987.80

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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.