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Finding the Fourth Proportional to 26,659.80, 39,989.70 and 25,018.20

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Solution

The fourth proportional to 26,659.80, 39,989.70 and 25,018.20 is: 37,527.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,659.80 : 39,989.70 = 25,018.20 : x
  2. Step 2: Convert to fraction form
    26,659.80/39,989.70 = 25,018.20/x
  3. Step 3: Cross multiply
    26,659.80x = 39,989.70 × 25,018.20
  4. Step 4: Simplify right side
    26,659.80x = 1,000,470,312.54
  5. Step 5: Solve for x
    x = 1,000,470,312.54/26,659.80
  6. Step 6: Final answer
    x = 37,527.30

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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.