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Finding the Fourth Proportional to 14,955.66, 20,640.02 and 8,242.65

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Solution

The fourth proportional to 14,955.66, 20,640.02 and 8,242.65 is: 11,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,955.66 : 20,640.02 = 8,242.65 : x
  2. Step 2: Convert to fraction form
    14,955.66/20,640.02 = 8,242.65/x
  3. Step 3: Cross multiply
    14,955.66x = 20,640.02 × 8,242.65
  4. Step 4: Simplify right side
    14,955.66x = 170,128,419.64
  5. Step 5: Solve for x
    x = 170,128,419.64/14,955.66
  6. Step 6: Final answer
    x = 11,375.52

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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.