Home / 20,678.25-31,017.69-5,095.89

Finding the Fourth Proportional to 20,678.25, 31,017.69 and 5,095.89

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Solution

The fourth proportional to 20,678.25, 31,017.69 and 5,095.89 is: 7,643.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.25 : 31,017.69 = 5,095.89 : x
  2. Step 2: Convert to fraction form
    20,678.25/31,017.69 = 5,095.89/x
  3. Step 3: Cross multiply
    20,678.25x = 31,017.69 × 5,095.89
  4. Step 4: Simplify right side
    20,678.25x = 158,062,736.29
  5. Step 5: Solve for x
    x = 158,062,736.29/20,678.25
  6. Step 6: Final answer
    x = 7,643.91

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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.