Home / 39,766.16-54,878.82-21,862.64

Finding the Fourth Proportional to 39,766.16, 54,878.82 and 21,862.64

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Solution

The fourth proportional to 39,766.16, 54,878.82 and 21,862.64 is: 30,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,766.16 : 54,878.82 = 21,862.64 : x
  2. Step 2: Convert to fraction form
    39,766.16/54,878.82 = 21,862.64/x
  3. Step 3: Cross multiply
    39,766.16x = 54,878.82 × 21,862.64
  4. Step 4: Simplify right side
    39,766.16x = 1,199,795,885.28
  5. Step 5: Solve for x
    x = 1,199,795,885.28/39,766.16
  6. Step 6: Final answer
    x = 30,171.28

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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.