Home / 13,799.43-20,665.13-7,938.27

Finding the Fourth Proportional to 13,799.43, 20,665.13 and 7,938.27

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Solution

The fourth proportional to 13,799.43, 20,665.13 and 7,938.27 is: 11,887.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.43 : 20,665.13 = 7,938.27 : x
  2. Step 2: Convert to fraction form
    13,799.43/20,665.13 = 7,938.27/x
  3. Step 3: Cross multiply
    13,799.43x = 20,665.13 × 7,938.27
  4. Step 4: Simplify right side
    13,799.43x = 164,045,341.83
  5. Step 5: Solve for x
    x = 164,045,341.83/13,799.43
  6. Step 6: Final answer
    x = 11,887.83

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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.