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Finding the Fourth Proportional to 12,062.68, 18,069.28 and 7,117.36

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Solution

The fourth proportional to 12,062.68, 18,069.28 and 7,117.36 is: 10,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,062.68 : 18,069.28 = 7,117.36 : x
  2. Step 2: Convert to fraction form
    12,062.68/18,069.28 = 7,117.36/x
  3. Step 3: Cross multiply
    12,062.68x = 18,069.28 × 7,117.36
  4. Step 4: Simplify right side
    12,062.68x = 128,605,570.70
  5. Step 5: Solve for x
    x = 128,605,570.70/12,062.68
  6. Step 6: Final answer
    x = 10,661.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.