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Finding the Fourth Proportional to 13,056.72, 18,019.80 and 7,393.80

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Solution

The fourth proportional to 13,056.72, 18,019.80 and 7,393.80 is: 10,204.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.72 : 18,019.80 = 7,393.80 : x
  2. Step 2: Convert to fraction form
    13,056.72/18,019.80 = 7,393.80/x
  3. Step 3: Cross multiply
    13,056.72x = 18,019.80 × 7,393.80
  4. Step 4: Simplify right side
    13,056.72x = 133,234,797.24
  5. Step 5: Solve for x
    x = 133,234,797.24/13,056.72
  6. Step 6: Final answer
    x = 10,204.31

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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.