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Finding the Fourth Proportional to 28,164, 42,246.60 and 10,642.08

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Solution

The fourth proportional to 28,164, 42,246.60 and 10,642.08 is: 15,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164 : 42,246.60 = 10,642.08 : x
  2. Step 2: Convert to fraction form
    28,164/42,246.60 = 10,642.08/x
  3. Step 3: Cross multiply
    28,164x = 42,246.60 × 10,642.08
  4. Step 4: Simplify right side
    28,164x = 449,591,696.93
  5. Step 5: Solve for x
    x = 449,591,696.93/28,164
  6. Step 6: Final answer
    x = 15,963.35

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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.