Home / 12,585.28-18,875.40-11,960.80

Finding the Fourth Proportional to 12,585.28, 18,875.40 and 11,960.80

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Solution

The fourth proportional to 12,585.28, 18,875.40 and 11,960.80 is: 17,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.28 : 18,875.40 = 11,960.80 : x
  2. Step 2: Convert to fraction form
    12,585.28/18,875.40 = 11,960.80/x
  3. Step 3: Cross multiply
    12,585.28x = 18,875.40 × 11,960.80
  4. Step 4: Simplify right side
    12,585.28x = 225,764,884.32
  5. Step 5: Solve for x
    x = 225,764,884.32/12,585.28
  6. Step 6: Final answer
    x = 17,938.81

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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.