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Finding the Fourth Proportional to 13,500.66, 20,250.99 and 4,266.66

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Solution

The fourth proportional to 13,500.66, 20,250.99 and 4,266.66 is: 6,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.66 : 20,250.99 = 4,266.66 : x
  2. Step 2: Convert to fraction form
    13,500.66/20,250.99 = 4,266.66/x
  3. Step 3: Cross multiply
    13,500.66x = 20,250.99 × 4,266.66
  4. Step 4: Simplify right side
    13,500.66x = 86,404,088.99
  5. Step 5: Solve for x
    x = 86,404,088.99/13,500.66
  6. Step 6: Final answer
    x = 6,399.99

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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.