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Finding the Fourth Proportional to 18,365.42, 25,341.15 and 10,406

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Solution

The fourth proportional to 18,365.42, 25,341.15 and 10,406 is: 14,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.42 : 25,341.15 = 10,406 : x
  2. Step 2: Convert to fraction form
    18,365.42/25,341.15 = 10,406/x
  3. Step 3: Cross multiply
    18,365.42x = 25,341.15 × 10,406
  4. Step 4: Simplify right side
    18,365.42x = 263,700,006.90
  5. Step 5: Solve for x
    x = 263,700,006.90/18,365.42
  6. Step 6: Final answer
    x = 14,358.51

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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.