Home / 42,856.41-64,283.93-11,691.66

Finding the Fourth Proportional to 42,856.41, 64,283.93 and 11,691.66

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Solution

The fourth proportional to 42,856.41, 64,283.93 and 11,691.66 is: 17,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,856.41 : 64,283.93 = 11,691.66 : x
  2. Step 2: Convert to fraction form
    42,856.41/64,283.93 = 11,691.66/x
  3. Step 3: Cross multiply
    42,856.41x = 64,283.93 × 11,691.66
  4. Step 4: Simplify right side
    42,856.41x = 751,585,717.88
  5. Step 5: Solve for x
    x = 751,585,717.88/42,856.41
  6. Step 6: Final answer
    x = 17,537.30

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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.