Home / 39,107.92-53,963.28-21,880.18

Finding the Fourth Proportional to 39,107.92, 53,963.28 and 21,880.18

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Solution

The fourth proportional to 39,107.92, 53,963.28 and 21,880.18 is: 30,191.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,107.92 : 53,963.28 = 21,880.18 : x
  2. Step 2: Convert to fraction form
    39,107.92/53,963.28 = 21,880.18/x
  3. Step 3: Cross multiply
    39,107.92x = 53,963.28 × 21,880.18
  4. Step 4: Simplify right side
    39,107.92x = 1,180,726,347.24
  5. Step 5: Solve for x
    x = 1,180,726,347.24/39,107.92
  6. Step 6: Final answer
    x = 30,191.49

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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.