Home / 13,959.60-20,939.40-5,192.70

Finding the Fourth Proportional to 13,959.60, 20,939.40 and 5,192.70

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Solution

The fourth proportional to 13,959.60, 20,939.40 and 5,192.70 is: 7,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.60 : 20,939.40 = 5,192.70 : x
  2. Step 2: Convert to fraction form
    13,959.60/20,939.40 = 5,192.70/x
  3. Step 3: Cross multiply
    13,959.60x = 20,939.40 × 5,192.70
  4. Step 4: Simplify right side
    13,959.60x = 108,732,022.38
  5. Step 5: Solve for x
    x = 108,732,022.38/13,959.60
  6. Step 6: Final answer
    x = 7,789.05

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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.