Home / 39,301.71-54,236.28-21,396.79

Finding the Fourth Proportional to 39,301.71, 54,236.28 and 21,396.79

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Solution

The fourth proportional to 39,301.71, 54,236.28 and 21,396.79 is: 29,527.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,301.71 : 54,236.28 = 21,396.79 : x
  2. Step 2: Convert to fraction form
    39,301.71/54,236.28 = 21,396.79/x
  3. Step 3: Cross multiply
    39,301.71x = 54,236.28 × 21,396.79
  4. Step 4: Simplify right side
    39,301.71x = 1,160,482,441.57
  5. Step 5: Solve for x
    x = 1,160,482,441.57/39,301.71
  6. Step 6: Final answer
    x = 29,527.53

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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.