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Finding the Fourth Proportional to 18,987, 26,202.60 and 10,604.04

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Solution

The fourth proportional to 18,987, 26,202.60 and 10,604.04 is: 14,633.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987 : 26,202.60 = 10,604.04 : x
  2. Step 2: Convert to fraction form
    18,987/26,202.60 = 10,604.04/x
  3. Step 3: Cross multiply
    18,987x = 26,202.60 × 10,604.04
  4. Step 4: Simplify right side
    18,987x = 277,853,418.50
  5. Step 5: Solve for x
    x = 277,853,418.50/18,987
  6. Step 6: Final answer
    x = 14,633.88

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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.