Home / 39,642.70-54,707.45-21,737.66

Finding the Fourth Proportional to 39,642.70, 54,707.45 and 21,737.66

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Solution

The fourth proportional to 39,642.70, 54,707.45 and 21,737.66 is: 29,998.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,642.70 : 54,707.45 = 21,737.66 : x
  2. Step 2: Convert to fraction form
    39,642.70/54,707.45 = 21,737.66/x
  3. Step 3: Cross multiply
    39,642.70x = 54,707.45 × 21,737.66
  4. Step 4: Simplify right side
    39,642.70x = 1,189,211,947.57
  5. Step 5: Solve for x
    x = 1,189,211,947.57/39,642.70
  6. Step 6: Final answer
    x = 29,998.26

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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.