Home / 9,872.40-13,623.51-5,396.21

Finding the Fourth Proportional to 9,872.40, 13,623.51 and 5,396.21

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Solution

The fourth proportional to 9,872.40, 13,623.51 and 5,396.21 is: 7,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872.40 : 13,623.51 = 5,396.21 : x
  2. Step 2: Convert to fraction form
    9,872.40/13,623.51 = 5,396.21/x
  3. Step 3: Cross multiply
    9,872.40x = 13,623.51 × 5,396.21
  4. Step 4: Simplify right side
    9,872.40x = 73,515,320.90
  5. Step 5: Solve for x
    x = 73,515,320.90/9,872.40
  6. Step 6: Final answer
    x = 7,446.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.