Home / 18,990.95-28,459.68-14,531.35

Finding the Fourth Proportional to 18,990.95, 28,459.68 and 14,531.35

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Solution

The fourth proportional to 18,990.95, 28,459.68 and 14,531.35 is: 21,776.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.95 : 28,459.68 = 14,531.35 : x
  2. Step 2: Convert to fraction form
    18,990.95/28,459.68 = 14,531.35/x
  3. Step 3: Cross multiply
    18,990.95x = 28,459.68 × 14,531.35
  4. Step 4: Simplify right side
    18,990.95x = 413,557,570.97
  5. Step 5: Solve for x
    x = 413,557,570.97/18,990.95
  6. Step 6: Final answer
    x = 21,776.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.