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Finding the Fourth Proportional to 18,689.76, 28,040.09 and 6,039.23

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Solution

The fourth proportional to 18,689.76, 28,040.09 and 6,039.23 is: 9,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.76 : 28,040.09 = 6,039.23 : x
  2. Step 2: Convert to fraction form
    18,689.76/28,040.09 = 6,039.23/x
  3. Step 3: Cross multiply
    18,689.76x = 28,040.09 × 6,039.23
  4. Step 4: Simplify right side
    18,689.76x = 169,340,382.33
  5. Step 5: Solve for x
    x = 169,340,382.33/18,689.76
  6. Step 6: Final answer
    x = 9,060.60

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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.