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Finding the Fourth Proportional to 13,062.63, 18,031.95 and 8,819.44

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Solution

The fourth proportional to 13,062.63, 18,031.95 and 8,819.44 is: 12,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,062.63 : 18,031.95 = 8,819.44 : x
  2. Step 2: Convert to fraction form
    13,062.63/18,031.95 = 8,819.44/x
  3. Step 3: Cross multiply
    13,062.63x = 18,031.95 × 8,819.44
  4. Step 4: Simplify right side
    13,062.63x = 159,031,657.01
  5. Step 5: Solve for x
    x = 159,031,657.01/13,062.63
  6. Step 6: Final answer
    x = 12,174.55

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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.