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Finding the Fourth Proportional to 18,374.40, 27,531.20 and 10,569.60

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Solution

The fourth proportional to 18,374.40, 27,531.20 and 10,569.60 is: 15,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.40 : 27,531.20 = 10,569.60 : x
  2. Step 2: Convert to fraction form
    18,374.40/27,531.20 = 10,569.60/x
  3. Step 3: Cross multiply
    18,374.40x = 27,531.20 × 10,569.60
  4. Step 4: Simplify right side
    18,374.40x = 290,993,771.52
  5. Step 5: Solve for x
    x = 290,993,771.52/18,374.40
  6. Step 6: Final answer
    x = 15,836.91

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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.