Home / 39,760.74-54,868.71-21,853.29

Finding the Fourth Proportional to 39,760.74, 54,868.71 and 21,853.29

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Solution

The fourth proportional to 39,760.74, 54,868.71 and 21,853.29 is: 30,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,760.74 : 54,868.71 = 21,853.29 : x
  2. Step 2: Convert to fraction form
    39,760.74/54,868.71 = 21,853.29/x
  3. Step 3: Cross multiply
    39,760.74x = 54,868.71 × 21,853.29
  4. Step 4: Simplify right side
    39,760.74x = 1,199,061,722.29
  5. Step 5: Solve for x
    x = 1,199,061,722.29/39,760.74
  6. Step 6: Final answer
    x = 30,156.93

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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.