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Finding the Fourth Proportional to 26,400.60, 39,600.90 and 23,981.40

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Solution

The fourth proportional to 26,400.60, 39,600.90 and 23,981.40 is: 35,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,400.60 : 39,600.90 = 23,981.40 : x
  2. Step 2: Convert to fraction form
    26,400.60/39,600.90 = 23,981.40/x
  3. Step 3: Cross multiply
    26,400.60x = 39,600.90 × 23,981.40
  4. Step 4: Simplify right side
    26,400.60x = 949,685,023.26
  5. Step 5: Solve for x
    x = 949,685,023.26/26,400.60
  6. Step 6: Final answer
    x = 35,972.10

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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.