Home / 28,119.12-42,143.04-14,084.64

Finding the Fourth Proportional to 28,119.12, 42,143.04 and 14,084.64

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Solution

The fourth proportional to 28,119.12, 42,143.04 and 14,084.64 is: 21,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.12 : 42,143.04 = 14,084.64 : x
  2. Step 2: Convert to fraction form
    28,119.12/42,143.04 = 14,084.64/x
  3. Step 3: Cross multiply
    28,119.12x = 42,143.04 × 14,084.64
  4. Step 4: Simplify right side
    28,119.12x = 593,569,546.91
  5. Step 5: Solve for x
    x = 593,569,546.91/28,119.12
  6. Step 6: Final answer
    x = 21,109.11

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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.