Home / 11,585.05-15,987.24-6,279.91

Finding the Fourth Proportional to 11,585.05, 15,987.24 and 6,279.91

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Solution

The fourth proportional to 11,585.05, 15,987.24 and 6,279.91 is: 8,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.05 : 15,987.24 = 6,279.91 : x
  2. Step 2: Convert to fraction form
    11,585.05/15,987.24 = 6,279.91/x
  3. Step 3: Cross multiply
    11,585.05x = 15,987.24 × 6,279.91
  4. Step 4: Simplify right side
    11,585.05x = 100,398,428.35
  5. Step 5: Solve for x
    x = 100,398,428.35/11,585.05
  6. Step 6: Final answer
    x = 8,666.21

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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.