Home / 42,831-64,239.24-11,666.28

Finding the Fourth Proportional to 42,831, 64,239.24 and 11,666.28

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Solution

The fourth proportional to 42,831, 64,239.24 and 11,666.28 is: 17,497.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831 : 64,239.24 = 11,666.28 : x
  2. Step 2: Convert to fraction form
    42,831/64,239.24 = 11,666.28/x
  3. Step 3: Cross multiply
    42,831x = 64,239.24 × 11,666.28
  4. Step 4: Simplify right side
    42,831x = 749,432,960.83
  5. Step 5: Solve for x
    x = 749,432,960.83/42,831
  6. Step 6: Final answer
    x = 17,497.44

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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.