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Finding the Fourth Proportional to 26,622.57, 39,938.04 and 9,980.31

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Solution

The fourth proportional to 26,622.57, 39,938.04 and 9,980.31 is: 14,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,622.57 : 39,938.04 = 9,980.31 : x
  2. Step 2: Convert to fraction form
    26,622.57/39,938.04 = 9,980.31/x
  3. Step 3: Cross multiply
    26,622.57x = 39,938.04 × 9,980.31
  4. Step 4: Simplify right side
    26,622.57x = 398,594,019.99
  5. Step 5: Solve for x
    x = 398,594,019.99/26,622.57
  6. Step 6: Final answer
    x = 14,972.03

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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.