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Finding the Fourth Proportional to 9,108.68, 13,663.03 and 7,031.72

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Solution

The fourth proportional to 9,108.68, 13,663.03 and 7,031.72 is: 10,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.68 : 13,663.03 = 7,031.72 : x
  2. Step 2: Convert to fraction form
    9,108.68/13,663.03 = 7,031.72/x
  3. Step 3: Cross multiply
    9,108.68x = 13,663.03 × 7,031.72
  4. Step 4: Simplify right side
    9,108.68x = 96,074,582.76
  5. Step 5: Solve for x
    x = 96,074,582.76/9,108.68
  6. Step 6: Final answer
    x = 10,547.58

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.