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Finding the Fourth Proportional to 12,012, 16,561.44 and 9,281.76

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Solution

The fourth proportional to 12,012, 16,561.44 and 9,281.76 is: 12,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012 : 16,561.44 = 9,281.76 : x
  2. Step 2: Convert to fraction form
    12,012/16,561.44 = 9,281.76/x
  3. Step 3: Cross multiply
    12,012x = 16,561.44 × 9,281.76
  4. Step 4: Simplify right side
    12,012x = 153,719,311.33
  5. Step 5: Solve for x
    x = 153,719,311.33/12,012
  6. Step 6: Final answer
    x = 12,797.15

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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.