Home / 18,429.60-25,436.40-12,141.60

Finding the Fourth Proportional to 18,429.60, 25,436.40 and 12,141.60

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Solution

The fourth proportional to 18,429.60, 25,436.40 and 12,141.60 is: 16,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.60 : 25,436.40 = 12,141.60 : x
  2. Step 2: Convert to fraction form
    18,429.60/25,436.40 = 12,141.60/x
  3. Step 3: Cross multiply
    18,429.60x = 25,436.40 × 12,141.60
  4. Step 4: Simplify right side
    18,429.60x = 308,838,594.24
  5. Step 5: Solve for x
    x = 308,838,594.24/18,429.60
  6. Step 6: Final answer
    x = 16,757.75

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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.