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Finding the Fourth Proportional to 13,164.80, 19,753.88 and 7,623.18

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Solution

The fourth proportional to 13,164.80, 19,753.88 and 7,623.18 is: 11,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.80 : 19,753.88 = 7,623.18 : x
  2. Step 2: Convert to fraction form
    13,164.80/19,753.88 = 7,623.18/x
  3. Step 3: Cross multiply
    13,164.80x = 19,753.88 × 7,623.18
  4. Step 4: Simplify right side
    13,164.80x = 150,587,344.82
  5. Step 5: Solve for x
    x = 150,587,344.82/13,164.80
  6. Step 6: Final answer
    x = 11,438.64

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1.5x scale

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.