Home / 21,860.70-30,151.79-14,294.90

Finding the Fourth Proportional to 21,860.70, 30,151.79 and 14,294.90

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Solution

The fourth proportional to 21,860.70, 30,151.79 and 14,294.90 is: 19,716.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.70 : 30,151.79 = 14,294.90 : x
  2. Step 2: Convert to fraction form
    21,860.70/30,151.79 = 14,294.90/x
  3. Step 3: Cross multiply
    21,860.70x = 30,151.79 × 14,294.90
  4. Step 4: Simplify right side
    21,860.70x = 431,016,600.64
  5. Step 5: Solve for x
    x = 431,016,600.64/21,860.70
  6. Step 6: Final answer
    x = 19,716.50

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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.