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Finding the Fourth Proportional to 27,163.30, 40,720.65 and 17,807.80

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Solution

The fourth proportional to 27,163.30, 40,720.65 and 17,807.80 is: 26,695.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,163.30 : 40,720.65 = 17,807.80 : x
  2. Step 2: Convert to fraction form
    27,163.30/40,720.65 = 17,807.80/x
  3. Step 3: Cross multiply
    27,163.30x = 40,720.65 × 17,807.80
  4. Step 4: Simplify right side
    27,163.30x = 725,145,191.07
  5. Step 5: Solve for x
    x = 725,145,191.07/27,163.30
  6. Step 6: Final answer
    x = 26,695.77

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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.