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Finding the Fourth Proportional to 26,994.80, 40,492.20 and 18,657.20

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Solution

The fourth proportional to 26,994.80, 40,492.20 and 18,657.20 is: 27,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,994.80 : 40,492.20 = 18,657.20 : x
  2. Step 2: Convert to fraction form
    26,994.80/40,492.20 = 18,657.20/x
  3. Step 3: Cross multiply
    26,994.80x = 40,492.20 × 18,657.20
  4. Step 4: Simplify right side
    26,994.80x = 755,471,073.84
  5. Step 5: Solve for x
    x = 755,471,073.84/26,994.80
  6. Step 6: Final answer
    x = 27,985.80

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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.