Home / 26,760.78-40,143.60-8,990.46

Finding the Fourth Proportional to 26,760.78, 40,143.60 and 8,990.46

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Solution

The fourth proportional to 26,760.78, 40,143.60 and 8,990.46 is: 13,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,760.78 : 40,143.60 = 8,990.46 : x
  2. Step 2: Convert to fraction form
    26,760.78/40,143.60 = 8,990.46/x
  3. Step 3: Cross multiply
    26,760.78x = 40,143.60 × 8,990.46
  4. Step 4: Simplify right side
    26,760.78x = 360,909,430.06
  5. Step 5: Solve for x
    x = 360,909,430.06/26,760.78
  6. Step 6: Final answer
    x = 13,486.51

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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.