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Finding the Fourth Proportional to 18,362.80, 25,339.71 and 10,404.82

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Solution

The fourth proportional to 18,362.80, 25,339.71 and 10,404.82 is: 14,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.80 : 25,339.71 = 10,404.82 : x
  2. Step 2: Convert to fraction form
    18,362.80/25,339.71 = 10,404.82/x
  3. Step 3: Cross multiply
    18,362.80x = 25,339.71 × 10,404.82
  4. Step 4: Simplify right side
    18,362.80x = 263,655,121.40
  5. Step 5: Solve for x
    x = 263,655,121.40/18,362.80
  6. Step 6: Final answer
    x = 14,358.11

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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.