Home / 28,578.47-42,788.50-21,537.17

Finding the Fourth Proportional to 28,578.47, 42,788.50 and 21,537.17

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Solution

The fourth proportional to 28,578.47, 42,788.50 and 21,537.17 is: 32,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.47 : 42,788.50 = 21,537.17 : x
  2. Step 2: Convert to fraction form
    28,578.47/42,788.50 = 21,537.17/x
  3. Step 3: Cross multiply
    28,578.47x = 42,788.50 × 21,537.17
  4. Step 4: Simplify right side
    28,578.47x = 921,542,930.76
  5. Step 5: Solve for x
    x = 921,542,930.76/28,578.47
  6. Step 6: Final answer
    x = 32,246.05

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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.