Home / 39,719.40-54,812.97-21,570.18

Finding the Fourth Proportional to 39,719.40, 54,812.97 and 21,570.18

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Solution

The fourth proportional to 39,719.40, 54,812.97 and 21,570.18 is: 29,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.40 : 54,812.97 = 21,570.18 : x
  2. Step 2: Convert to fraction form
    39,719.40/54,812.97 = 21,570.18/x
  3. Step 3: Cross multiply
    39,719.40x = 54,812.97 × 21,570.18
  4. Step 4: Simplify right side
    39,719.40x = 1,182,325,629.23
  5. Step 5: Solve for x
    x = 1,182,325,629.23/39,719.40
  6. Step 6: Final answer
    x = 29,766.96

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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.