Home / 12,068.12-18,088.16-7,141.91

Finding the Fourth Proportional to 12,068.12, 18,088.16 and 7,141.91

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Solution

The fourth proportional to 12,068.12, 18,088.16 and 7,141.91 is: 10,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,068.12 : 18,088.16 = 7,141.91 : x
  2. Step 2: Convert to fraction form
    12,068.12/18,088.16 = 7,141.91/x
  3. Step 3: Cross multiply
    12,068.12x = 18,088.16 × 7,141.91
  4. Step 4: Simplify right side
    12,068.12x = 129,183,884.64
  5. Step 5: Solve for x
    x = 129,183,884.64/12,068.12
  6. Step 6: Final answer
    x = 10,704.56

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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.