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Finding the Fourth Proportional to 17,991.06, 27,000.63 and 12,483.20

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Solution

The fourth proportional to 17,991.06, 27,000.63 and 12,483.20 is: 18,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.06 : 27,000.63 = 12,483.20 : x
  2. Step 2: Convert to fraction form
    17,991.06/27,000.63 = 12,483.20/x
  3. Step 3: Cross multiply
    17,991.06x = 27,000.63 × 12,483.20
  4. Step 4: Simplify right side
    17,991.06x = 337,054,129.41
  5. Step 5: Solve for x
    x = 337,054,129.41/17,991.06
  6. Step 6: Final answer
    x = 18,734.53

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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.