Home / 11,589.36-15,987.90-6,807.72

Finding the Fourth Proportional to 11,589.36, 15,987.90 and 6,807.72

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Solution

The fourth proportional to 11,589.36, 15,987.90 and 6,807.72 is: 9,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,589.36 : 15,987.90 = 6,807.72 : x
  2. Step 2: Convert to fraction form
    11,589.36/15,987.90 = 6,807.72/x
  3. Step 3: Cross multiply
    11,589.36x = 15,987.90 × 6,807.72
  4. Step 4: Simplify right side
    11,589.36x = 108,841,146.59
  5. Step 5: Solve for x
    x = 108,841,146.59/11,589.36
  6. Step 6: Final answer
    x = 9,391.47

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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.