Home / 39,766.20-54,878.40-21,862.14

Finding the Fourth Proportional to 39,766.20, 54,878.40 and 21,862.14

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Solution

The fourth proportional to 39,766.20, 54,878.40 and 21,862.14 is: 30,170.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,766.20 : 54,878.40 = 21,862.14 : x
  2. Step 2: Convert to fraction form
    39,766.20/54,878.40 = 21,862.14/x
  3. Step 3: Cross multiply
    39,766.20x = 54,878.40 × 21,862.14
  4. Step 4: Simplify right side
    39,766.20x = 1,199,759,263.78
  5. Step 5: Solve for x
    x = 1,199,759,263.78/39,766.20
  6. Step 6: Final answer
    x = 30,170.33

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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.