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Finding the Fourth Proportional to 18,908.69, 28,356.28 and 6,256.13

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Solution

The fourth proportional to 18,908.69, 28,356.28 and 6,256.13 is: 9,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.69 : 28,356.28 = 6,256.13 : x
  2. Step 2: Convert to fraction form
    18,908.69/28,356.28 = 6,256.13/x
  3. Step 3: Cross multiply
    18,908.69x = 28,356.28 × 6,256.13
  4. Step 4: Simplify right side
    18,908.69x = 177,400,416.57
  5. Step 5: Solve for x
    x = 177,400,416.57/18,908.69
  6. Step 6: Final answer
    x = 9,381.95

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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.