Home / 11,585.16-15,987.30-6,279.88

Finding the Fourth Proportional to 11,585.16, 15,987.30 and 6,279.88

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Solution

The fourth proportional to 11,585.16, 15,987.30 and 6,279.88 is: 8,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.16 : 15,987.30 = 6,279.88 : x
  2. Step 2: Convert to fraction form
    11,585.16/15,987.30 = 6,279.88/x
  3. Step 3: Cross multiply
    11,585.16x = 15,987.30 × 6,279.88
  4. Step 4: Simplify right side
    11,585.16x = 100,398,325.52
  5. Step 5: Solve for x
    x = 100,398,325.52/11,585.16
  6. Step 6: Final answer
    x = 8,666.11

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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.