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Finding the Fourth Proportional to 15,202.92, 20,977.47 and 8,488.29

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Solution

The fourth proportional to 15,202.92, 20,977.47 and 8,488.29 is: 11,712.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202.92 : 20,977.47 = 8,488.29 : x
  2. Step 2: Convert to fraction form
    15,202.92/20,977.47 = 8,488.29/x
  3. Step 3: Cross multiply
    15,202.92x = 20,977.47 × 8,488.29
  4. Step 4: Simplify right side
    15,202.92x = 178,062,848.83
  5. Step 5: Solve for x
    x = 178,062,848.83/15,202.92
  6. Step 6: Final answer
    x = 11,712.41

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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.