Home / 39,345.28-54,295.78-21,440.43

Finding the Fourth Proportional to 39,345.28, 54,295.78 and 21,440.43

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Solution

The fourth proportional to 39,345.28, 54,295.78 and 21,440.43 is: 29,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,345.28 : 54,295.78 = 21,440.43 : x
  2. Step 2: Convert to fraction form
    39,345.28/54,295.78 = 21,440.43/x
  3. Step 3: Cross multiply
    39,345.28x = 54,295.78 × 21,440.43
  4. Step 4: Simplify right side
    39,345.28x = 1,164,124,870.39
  5. Step 5: Solve for x
    x = 1,164,124,870.39/39,345.28
  6. Step 6: Final answer
    x = 29,587.41

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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.