Home / 39,798.23-54,920.41-21,648.38

Finding the Fourth Proportional to 39,798.23, 54,920.41 and 21,648.38

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Solution

The fourth proportional to 39,798.23, 54,920.41 and 21,648.38 is: 29,874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,798.23 : 54,920.41 = 21,648.38 : x
  2. Step 2: Convert to fraction form
    39,798.23/54,920.41 = 21,648.38/x
  3. Step 3: Cross multiply
    39,798.23x = 54,920.41 × 21,648.38
  4. Step 4: Simplify right side
    39,798.23x = 1,188,937,576.71
  5. Step 5: Solve for x
    x = 1,188,937,576.71/39,798.23
  6. Step 6: Final answer
    x = 29,874.14

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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.