Home / 26,715.60-36,864.31-15,388.78

Finding the Fourth Proportional to 26,715.60, 36,864.31 and 15,388.78

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Solution

The fourth proportional to 26,715.60, 36,864.31 and 15,388.78 is: 21,234.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,715.60 : 36,864.31 = 15,388.78 : x
  2. Step 2: Convert to fraction form
    26,715.60/36,864.31 = 15,388.78/x
  3. Step 3: Cross multiply
    26,715.60x = 36,864.31 × 15,388.78
  4. Step 4: Simplify right side
    26,715.60x = 567,296,756.44
  5. Step 5: Solve for x
    x = 567,296,756.44/26,715.60
  6. Step 6: Final answer
    x = 21,234.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.