Home / 39,872.14-55,023.57-21,966.99

Finding the Fourth Proportional to 39,872.14, 55,023.57 and 21,966.99

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Solution

The fourth proportional to 39,872.14, 55,023.57 and 21,966.99 is: 30,314.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.14 : 55,023.57 = 21,966.99 : x
  2. Step 2: Convert to fraction form
    39,872.14/55,023.57 = 21,966.99/x
  3. Step 3: Cross multiply
    39,872.14x = 55,023.57 × 21,966.99
  4. Step 4: Simplify right side
    39,872.14x = 1,208,702,211.95
  5. Step 5: Solve for x
    x = 1,208,702,211.95/39,872.14
  6. Step 6: Final answer
    x = 30,314.46

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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.