Home / 28,580.11-42,706.42-21,788.35

Finding the Fourth Proportional to 28,580.11, 42,706.42 and 21,788.35

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Solution

The fourth proportional to 28,580.11, 42,706.42 and 21,788.35 is: 32,557.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.11 : 42,706.42 = 21,788.35 : x
  2. Step 2: Convert to fraction form
    28,580.11/42,706.42 = 21,788.35/x
  3. Step 3: Cross multiply
    28,580.11x = 42,706.42 × 21,788.35
  4. Step 4: Simplify right side
    28,580.11x = 930,502,264.97
  5. Step 5: Solve for x
    x = 930,502,264.97/28,580.11
  6. Step 6: Final answer
    x = 32,557.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.