Home / 26,760.72-40,141.08-12,900

Finding the Fourth Proportional to 26,760.72, 40,141.08 and 12,900

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Solution

The fourth proportional to 26,760.72, 40,141.08 and 12,900 is: 19,350

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,760.72 : 40,141.08 = 12,900 : x
  2. Step 2: Convert to fraction form
    26,760.72/40,141.08 = 12,900/x
  3. Step 3: Cross multiply
    26,760.72x = 40,141.08 × 12,900
  4. Step 4: Simplify right side
    26,760.72x = 517,819,932
  5. Step 5: Solve for x
    x = 517,819,932/26,760.72
  6. Step 6: Final answer
    x = 19,350

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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.