Home / 15,621.72-23,436-7,297.20

Finding the Fourth Proportional to 15,621.72, 23,436 and 7,297.20

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Solution

The fourth proportional to 15,621.72, 23,436 and 7,297.20 is: 10,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.72 : 23,436 = 7,297.20 : x
  2. Step 2: Convert to fraction form
    15,621.72/23,436 = 7,297.20/x
  3. Step 3: Cross multiply
    15,621.72x = 23,436 × 7,297.20
  4. Step 4: Simplify right side
    15,621.72x = 171,017,179.20
  5. Step 5: Solve for x
    x = 171,017,179.20/15,621.72
  6. Step 6: Final answer
    x = 10,947.40

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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.