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Finding the Fourth Proportional to 15,988.85, 22,064.07 and 8,819.05

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Solution

The fourth proportional to 15,988.85, 22,064.07 and 8,819.05 is: 12,169.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.85 : 22,064.07 = 8,819.05 : x
  2. Step 2: Convert to fraction form
    15,988.85/22,064.07 = 8,819.05/x
  3. Step 3: Cross multiply
    15,988.85x = 22,064.07 × 8,819.05
  4. Step 4: Simplify right side
    15,988.85x = 194,584,095.35
  5. Step 5: Solve for x
    x = 194,584,095.35/15,988.85
  6. Step 6: Final answer
    x = 12,169.99

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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.