Home / 14,945.28-20,617.92-11,589.12

Finding the Fourth Proportional to 14,945.28, 20,617.92 and 11,589.12

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Solution

The fourth proportional to 14,945.28, 20,617.92 and 11,589.12 is: 15,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,945.28 : 20,617.92 = 11,589.12 : x
  2. Step 2: Convert to fraction form
    14,945.28/20,617.92 = 11,589.12/x
  3. Step 3: Cross multiply
    14,945.28x = 20,617.92 × 11,589.12
  4. Step 4: Simplify right side
    14,945.28x = 238,943,549.03
  5. Step 5: Solve for x
    x = 238,943,549.03/14,945.28
  6. Step 6: Final answer
    x = 15,987.89

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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.