Home / 21,986.18-30,347.82-14,028.39

Finding the Fourth Proportional to 21,986.18, 30,347.82 and 14,028.39

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Solution

The fourth proportional to 21,986.18, 30,347.82 and 14,028.39 is: 19,363.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.18 : 30,347.82 = 14,028.39 : x
  2. Step 2: Convert to fraction form
    21,986.18/30,347.82 = 14,028.39/x
  3. Step 3: Cross multiply
    21,986.18x = 30,347.82 × 14,028.39
  4. Step 4: Simplify right side
    21,986.18x = 425,731,019.54
  5. Step 5: Solve for x
    x = 425,731,019.54/21,986.18
  6. Step 6: Final answer
    x = 19,363.57

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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.