Home / 39,320.28-54,262.08-21,415.38

Finding the Fourth Proportional to 39,320.28, 54,262.08 and 21,415.38

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Solution

The fourth proportional to 39,320.28, 54,262.08 and 21,415.38 is: 29,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.28 : 54,262.08 = 21,415.38 : x
  2. Step 2: Convert to fraction form
    39,320.28/54,262.08 = 21,415.38/x
  3. Step 3: Cross multiply
    39,320.28x = 54,262.08 × 21,415.38
  4. Step 4: Simplify right side
    39,320.28x = 1,162,043,062.79
  5. Step 5: Solve for x
    x = 1,162,043,062.79/39,320.28
  6. Step 6: Final answer
    x = 29,553.28

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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.