Home / 11,589.06-15,985.68-6,870

Finding the Fourth Proportional to 11,589.06, 15,985.68 and 6,870

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Solution

The fourth proportional to 11,589.06, 15,985.68 and 6,870 is: 9,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,589.06 : 15,985.68 = 6,870 : x
  2. Step 2: Convert to fraction form
    11,589.06/15,985.68 = 6,870/x
  3. Step 3: Cross multiply
    11,589.06x = 15,985.68 × 6,870
  4. Step 4: Simplify right side
    11,589.06x = 109,821,621.60
  5. Step 5: Solve for x
    x = 109,821,621.60/11,589.06
  6. Step 6: Final answer
    x = 9,476.32

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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.