Home / 11,589.78-15,987.87-6,875.58

Finding the Fourth Proportional to 11,589.78, 15,987.87 and 6,875.58

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Solution

The fourth proportional to 11,589.78, 15,987.87 and 6,875.58 is: 9,484.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,589.78 : 15,987.87 = 6,875.58 : x
  2. Step 2: Convert to fraction form
    11,589.78/15,987.87 = 6,875.58/x
  3. Step 3: Cross multiply
    11,589.78x = 15,987.87 × 6,875.58
  4. Step 4: Simplify right side
    11,589.78x = 109,925,879.21
  5. Step 5: Solve for x
    x = 109,925,879.21/11,589.78
  6. Step 6: Final answer
    x = 9,484.73

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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.