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Finding the Fourth Proportional to 26,901.80, 40,323.90 and 12,108.20

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Solution

The fourth proportional to 26,901.80, 40,323.90 and 12,108.20 is: 18,149.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,901.80 : 40,323.90 = 12,108.20 : x
  2. Step 2: Convert to fraction form
    26,901.80/40,323.90 = 12,108.20/x
  3. Step 3: Cross multiply
    26,901.80x = 40,323.90 × 12,108.20
  4. Step 4: Simplify right side
    26,901.80x = 488,249,845.98
  5. Step 5: Solve for x
    x = 488,249,845.98/26,901.80
  6. Step 6: Final answer
    x = 18,149.34

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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.