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Finding the Fourth Proportional to 18,512.60, 25,530.93 and 13,488.57

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Solution

The fourth proportional to 18,512.60, 25,530.93 and 13,488.57 is: 18,602.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.60 : 25,530.93 = 13,488.57 : x
  2. Step 2: Convert to fraction form
    18,512.60/25,530.93 = 13,488.57/x
  3. Step 3: Cross multiply
    18,512.60x = 25,530.93 × 13,488.57
  4. Step 4: Simplify right side
    18,512.60x = 344,375,736.47
  5. Step 5: Solve for x
    x = 344,375,736.47/18,512.60
  6. Step 6: Final answer
    x = 18,602.24

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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.