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Finding the Fourth Proportional to 15,202.51, 20,979.24 and 8,488.24

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Solution

The fourth proportional to 15,202.51, 20,979.24 and 8,488.24 is: 11,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202.51 : 20,979.24 = 8,488.24 : x
  2. Step 2: Convert to fraction form
    15,202.51/20,979.24 = 8,488.24/x
  3. Step 3: Cross multiply
    15,202.51x = 20,979.24 × 8,488.24
  4. Step 4: Simplify right side
    15,202.51x = 178,076,845.36
  5. Step 5: Solve for x
    x = 178,076,845.36/15,202.51
  6. Step 6: Final answer
    x = 11,713.65

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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.