Home / 20,583.12-28,414.50-13,788.84

Finding the Fourth Proportional to 20,583.12, 28,414.50 and 13,788.84

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Solution

The fourth proportional to 20,583.12, 28,414.50 and 13,788.84 is: 19,035.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.12 : 28,414.50 = 13,788.84 : x
  2. Step 2: Convert to fraction form
    20,583.12/28,414.50 = 13,788.84/x
  3. Step 3: Cross multiply
    20,583.12x = 28,414.50 × 13,788.84
  4. Step 4: Simplify right side
    20,583.12x = 391,802,994.18
  5. Step 5: Solve for x
    x = 391,802,994.18/20,583.12
  6. Step 6: Final answer
    x = 19,035.16

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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.