Home / 11,613.60-16,031.34-7,839

Finding the Fourth Proportional to 11,613.60, 16,031.34 and 7,839

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Solution

The fourth proportional to 11,613.60, 16,031.34 and 7,839 is: 10,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.60 : 16,031.34 = 7,839 : x
  2. Step 2: Convert to fraction form
    11,613.60/16,031.34 = 7,839/x
  3. Step 3: Cross multiply
    11,613.60x = 16,031.34 × 7,839
  4. Step 4: Simplify right side
    11,613.60x = 125,669,674.26
  5. Step 5: Solve for x
    x = 125,669,674.26/11,613.60
  6. Step 6: Final answer
    x = 10,820.91

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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.