Home / 39,296.04-54,228.66-21,391.20

Finding the Fourth Proportional to 39,296.04, 54,228.66 and 21,391.20

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Solution

The fourth proportional to 39,296.04, 54,228.66 and 21,391.20 is: 29,519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,296.04 : 54,228.66 = 21,391.20 : x
  2. Step 2: Convert to fraction form
    39,296.04/54,228.66 = 21,391.20/x
  3. Step 3: Cross multiply
    39,296.04x = 54,228.66 × 21,391.20
  4. Step 4: Simplify right side
    39,296.04x = 1,160,016,111.79
  5. Step 5: Solve for x
    x = 1,160,016,111.79/39,296.04
  6. Step 6: Final answer
    x = 29,519.92

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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.