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Finding the Fourth Proportional to 12,019, 16,571.10 and 9,288.76

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Solution

The fourth proportional to 12,019, 16,571.10 and 9,288.76 is: 12,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019 : 16,571.10 = 9,288.76 : x
  2. Step 2: Convert to fraction form
    12,019/16,571.10 = 9,288.76/x
  3. Step 3: Cross multiply
    12,019x = 16,571.10 × 9,288.76
  4. Step 4: Simplify right side
    12,019x = 153,924,970.84
  5. Step 5: Solve for x
    x = 153,924,970.84/12,019
  6. Step 6: Final answer
    x = 12,806.80

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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.