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Finding the Fourth Proportional to 14,661.68, 20,228.08 and 8,287.52

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Solution

The fourth proportional to 14,661.68, 20,228.08 and 8,287.52 is: 11,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.68 : 20,228.08 = 8,287.52 : x
  2. Step 2: Convert to fraction form
    14,661.68/20,228.08 = 8,287.52/x
  3. Step 3: Cross multiply
    14,661.68x = 20,228.08 × 8,287.52
  4. Step 4: Simplify right side
    14,661.68x = 167,640,617.56
  5. Step 5: Solve for x
    x = 167,640,617.56/14,661.68
  6. Step 6: Final answer
    x = 11,433.93

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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.