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Finding the Fourth Proportional to 22,319.01, 30,800.16 and 12,109.99

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Solution

The fourth proportional to 22,319.01, 30,800.16 and 12,109.99 is: 16,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,319.01 : 30,800.16 = 12,109.99 : x
  2. Step 2: Convert to fraction form
    22,319.01/30,800.16 = 12,109.99/x
  3. Step 3: Cross multiply
    22,319.01x = 30,800.16 × 12,109.99
  4. Step 4: Simplify right side
    22,319.01x = 372,989,757.32
  5. Step 5: Solve for x
    x = 372,989,757.32/22,319.01
  6. Step 6: Final answer
    x = 16,711.76

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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.