Home / 39,716.76-54,806.98-21,814.12

Finding the Fourth Proportional to 39,716.76, 54,806.98 and 21,814.12

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Solution

The fourth proportional to 39,716.76, 54,806.98 and 21,814.12 is: 30,102.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.76 : 54,806.98 = 21,814.12 : x
  2. Step 2: Convert to fraction form
    39,716.76/54,806.98 = 21,814.12/x
  3. Step 3: Cross multiply
    39,716.76x = 54,806.98 × 21,814.12
  4. Step 4: Simplify right side
    39,716.76x = 1,195,566,038.56
  5. Step 5: Solve for x
    x = 1,195,566,038.56/39,716.76
  6. Step 6: Final answer
    x = 30,102.31

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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.