Home / 39,314.28-54,253.71-21,409.28

Finding the Fourth Proportional to 39,314.28, 54,253.71 and 21,409.28

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Solution

The fourth proportional to 39,314.28, 54,253.71 and 21,409.28 is: 29,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,314.28 : 54,253.71 = 21,409.28 : x
  2. Step 2: Convert to fraction form
    39,314.28/54,253.71 = 21,409.28/x
  3. Step 3: Cross multiply
    39,314.28x = 54,253.71 × 21,409.28
  4. Step 4: Simplify right side
    39,314.28x = 1,161,532,868.43
  5. Step 5: Solve for x
    x = 1,161,532,868.43/39,314.28
  6. Step 6: Final answer
    x = 29,544.81

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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.