Home / 39,738.56-54,839.28-21,833.40

Finding the Fourth Proportional to 39,738.56, 54,839.28 and 21,833.40

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Solution

The fourth proportional to 39,738.56, 54,839.28 and 21,833.40 is: 30,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,738.56 : 54,839.28 = 21,833.40 : x
  2. Step 2: Convert to fraction form
    39,738.56/54,839.28 = 21,833.40/x
  3. Step 3: Cross multiply
    39,738.56x = 54,839.28 × 21,833.40
  4. Step 4: Simplify right side
    39,738.56x = 1,197,327,935.95
  5. Step 5: Solve for x
    x = 1,197,327,935.95/39,738.56
  6. Step 6: Final answer
    x = 30,130.13

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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.