Home / 42,823.29-64,234.94-13,240.47

Finding the Fourth Proportional to 42,823.29, 64,234.94 and 13,240.47

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Solution

The fourth proportional to 42,823.29, 64,234.94 and 13,240.47 is: 19,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,823.29 : 64,234.94 = 13,240.47 : x
  2. Step 2: Convert to fraction form
    42,823.29/64,234.94 = 13,240.47/x
  3. Step 3: Cross multiply
    42,823.29x = 64,234.94 × 13,240.47
  4. Step 4: Simplify right side
    42,823.29x = 850,500,729.82
  5. Step 5: Solve for x
    x = 850,500,729.82/42,823.29
  6. Step 6: Final answer
    x = 19,860.71

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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.