Home / 39,193.74-54,087.75-21,288.90

Finding the Fourth Proportional to 39,193.74, 54,087.75 and 21,288.90

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Solution

The fourth proportional to 39,193.74, 54,087.75 and 21,288.90 is: 29,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,193.74 : 54,087.75 = 21,288.90 : x
  2. Step 2: Convert to fraction form
    39,193.74/54,087.75 = 21,288.90/x
  3. Step 3: Cross multiply
    39,193.74x = 54,087.75 × 21,288.90
  4. Step 4: Simplify right side
    39,193.74x = 1,151,468,700.98
  5. Step 5: Solve for x
    x = 1,151,468,700.98/39,193.74
  6. Step 6: Final answer
    x = 29,378.89

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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.