Home / 39,340.71-54,290.48-21,436.20

Finding the Fourth Proportional to 39,340.71, 54,290.48 and 21,436.20

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Solution

The fourth proportional to 39,340.71, 54,290.48 and 21,436.20 is: 29,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.71 : 54,290.48 = 21,436.20 : x
  2. Step 2: Convert to fraction form
    39,340.71/54,290.48 = 21,436.20/x
  3. Step 3: Cross multiply
    39,340.71x = 54,290.48 × 21,436.20
  4. Step 4: Simplify right side
    39,340.71x = 1,163,781,480.20
  5. Step 5: Solve for x
    x = 1,163,781,480.20/39,340.71
  6. Step 6: Final answer
    x = 29,582.12

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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.