Home / 39,911.40-55,082.75-22,920.98

Finding the Fourth Proportional to 39,911.40, 55,082.75 and 22,920.98

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Solution

The fourth proportional to 39,911.40, 55,082.75 and 22,920.98 is: 31,633.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911.40 : 55,082.75 = 22,920.98 : x
  2. Step 2: Convert to fraction form
    39,911.40/55,082.75 = 22,920.98/x
  3. Step 3: Cross multiply
    39,911.40x = 55,082.75 × 22,920.98
  4. Step 4: Simplify right side
    39,911.40x = 1,262,550,221.08
  5. Step 5: Solve for x
    x = 1,262,550,221.08/39,911.40
  6. Step 6: Final answer
    x = 31,633.82

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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.