Home / 19,939.38-27,502.20-13,125.18

Finding the Fourth Proportional to 19,939.38, 27,502.20 and 13,125.18

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Solution

The fourth proportional to 19,939.38, 27,502.20 and 13,125.18 is: 18,103.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.38 : 27,502.20 = 13,125.18 : x
  2. Step 2: Convert to fraction form
    19,939.38/27,502.20 = 13,125.18/x
  3. Step 3: Cross multiply
    19,939.38x = 27,502.20 × 13,125.18
  4. Step 4: Simplify right side
    19,939.38x = 360,971,325.40
  5. Step 5: Solve for x
    x = 360,971,325.40/19,939.38
  6. Step 6: Final answer
    x = 18,103.44

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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.