Home / 13,940.79-20,884.46-8,660.13

Finding the Fourth Proportional to 13,940.79, 20,884.46 and 8,660.13

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Solution

The fourth proportional to 13,940.79, 20,884.46 and 8,660.13 is: 12,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.79 : 20,884.46 = 8,660.13 : x
  2. Step 2: Convert to fraction form
    13,940.79/20,884.46 = 8,660.13/x
  3. Step 3: Cross multiply
    13,940.79x = 20,884.46 × 8,660.13
  4. Step 4: Simplify right side
    13,940.79x = 180,862,095.28
  5. Step 5: Solve for x
    x = 180,862,095.28/13,940.79
  6. Step 6: Final answer
    x = 12,973.59

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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.