Home / 26,712.66-40,078.18-11,931.78

Finding the Fourth Proportional to 26,712.66, 40,078.18 and 11,931.78

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Solution

The fourth proportional to 26,712.66, 40,078.18 and 11,931.78 is: 17,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,712.66 : 40,078.18 = 11,931.78 : x
  2. Step 2: Convert to fraction form
    26,712.66/40,078.18 = 11,931.78/x
  3. Step 3: Cross multiply
    26,712.66x = 40,078.18 × 11,931.78
  4. Step 4: Simplify right side
    26,712.66x = 478,204,026.56
  5. Step 5: Solve for x
    x = 478,204,026.56/26,712.66
  6. Step 6: Final answer
    x = 17,901.77

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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.