Home / 17,621.90-26,430.27-5,138.57

Finding the Fourth Proportional to 17,621.90, 26,430.27 and 5,138.57

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Solution

The fourth proportional to 17,621.90, 26,430.27 and 5,138.57 is: 7,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621.90 : 26,430.27 = 5,138.57 : x
  2. Step 2: Convert to fraction form
    17,621.90/26,430.27 = 5,138.57/x
  3. Step 3: Cross multiply
    17,621.90x = 26,430.27 × 5,138.57
  4. Step 4: Simplify right side
    17,621.90x = 135,813,660.36
  5. Step 5: Solve for x
    x = 135,813,660.36/17,621.90
  6. Step 6: Final answer
    x = 7,707.10

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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.