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Finding the Fourth Proportional to 18,993.56, 28,496.48 and 9,133.56

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Solution

The fourth proportional to 18,993.56, 28,496.48 and 9,133.56 is: 13,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.56 : 28,496.48 = 9,133.56 : x
  2. Step 2: Convert to fraction form
    18,993.56/28,496.48 = 9,133.56/x
  3. Step 3: Cross multiply
    18,993.56x = 28,496.48 × 9,133.56
  4. Step 4: Simplify right side
    18,993.56x = 260,274,264.20
  5. Step 5: Solve for x
    x = 260,274,264.20/18,993.56
  6. Step 6: Final answer
    x = 13,703.29

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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.