Home / 39,658.90-54,730.80-21,754.66

Finding the Fourth Proportional to 39,658.90, 54,730.80 and 21,754.66

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Solution

The fourth proportional to 39,658.90, 54,730.80 and 21,754.66 is: 30,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.90 : 54,730.80 = 21,754.66 : x
  2. Step 2: Convert to fraction form
    39,658.90/54,730.80 = 21,754.66/x
  3. Step 3: Cross multiply
    39,658.90x = 54,730.80 × 21,754.66
  4. Step 4: Simplify right side
    39,658.90x = 1,190,649,945.53
  5. Step 5: Solve for x
    x = 1,190,649,945.53/39,658.90
  6. Step 6: Final answer
    x = 30,022.26

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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.