Home / 17,621.65-26,429.90-5,138.32

Finding the Fourth Proportional to 17,621.65, 26,429.90 and 5,138.32

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Solution

The fourth proportional to 17,621.65, 26,429.90 and 5,138.32 is: 7,706.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621.65 : 26,429.90 = 5,138.32 : x
  2. Step 2: Convert to fraction form
    17,621.65/26,429.90 = 5,138.32/x
  3. Step 3: Cross multiply
    17,621.65x = 26,429.90 × 5,138.32
  4. Step 4: Simplify right side
    17,621.65x = 135,805,125.93
  5. Step 5: Solve for x
    x = 135,805,125.93/17,621.65
  6. Step 6: Final answer
    x = 7,706.72

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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.