Home / 21,002.87-28,981.32-11,572.04

Finding the Fourth Proportional to 21,002.87, 28,981.32 and 11,572.04

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Solution

The fourth proportional to 21,002.87, 28,981.32 and 11,572.04 is: 15,967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.87 : 28,981.32 = 11,572.04 : x
  2. Step 2: Convert to fraction form
    21,002.87/28,981.32 = 11,572.04/x
  3. Step 3: Cross multiply
    21,002.87x = 28,981.32 × 11,572.04
  4. Step 4: Simplify right side
    21,002.87x = 335,372,994.29
  5. Step 5: Solve for x
    x = 335,372,994.29/21,002.87
  6. Step 6: Final answer
    x = 15,967.96

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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.