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Finding the Fourth Proportional to 18,291.69, 27,425.70 and 12,032.78

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Solution

The fourth proportional to 18,291.69, 27,425.70 and 12,032.78 is: 18,041.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.69 : 27,425.70 = 12,032.78 : x
  2. Step 2: Convert to fraction form
    18,291.69/27,425.70 = 12,032.78/x
  3. Step 3: Cross multiply
    18,291.69x = 27,425.70 × 12,032.78
  4. Step 4: Simplify right side
    18,291.69x = 330,007,277.32
  5. Step 5: Solve for x
    x = 330,007,277.32/18,291.69
  6. Step 6: Final answer
    x = 18,041.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.