Home / 11,031.62-15,221.97-6,315.02

Finding the Fourth Proportional to 11,031.62, 15,221.97 and 6,315.02

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Solution

The fourth proportional to 11,031.62, 15,221.97 and 6,315.02 is: 8,713.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.62 : 15,221.97 = 6,315.02 : x
  2. Step 2: Convert to fraction form
    11,031.62/15,221.97 = 6,315.02/x
  3. Step 3: Cross multiply
    11,031.62x = 15,221.97 × 6,315.02
  4. Step 4: Simplify right side
    11,031.62x = 96,127,044.99
  5. Step 5: Solve for x
    x = 96,127,044.99/11,031.62
  6. Step 6: Final answer
    x = 8,713.77

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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.