Home / 39,309.50-54,246.30-21,404.81

Finding the Fourth Proportional to 39,309.50, 54,246.30 and 21,404.81

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Solution

The fourth proportional to 39,309.50, 54,246.30 and 21,404.81 is: 29,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.50 : 54,246.30 = 21,404.81 : x
  2. Step 2: Convert to fraction form
    39,309.50/54,246.30 = 21,404.81/x
  3. Step 3: Cross multiply
    39,309.50x = 54,246.30 × 21,404.81
  4. Step 4: Simplify right side
    39,309.50x = 1,161,131,744.70
  5. Step 5: Solve for x
    x = 1,161,131,744.70/39,309.50
  6. Step 6: Final answer
    x = 29,538.20

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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.