Home / 31,841.10-47,782.36-12,119.82

Finding the Fourth Proportional to 31,841.10, 47,782.36 and 12,119.82

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Solution

The fourth proportional to 31,841.10, 47,782.36 and 12,119.82 is: 18,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,841.10 : 47,782.36 = 12,119.82 : x
  2. Step 2: Convert to fraction form
    31,841.10/47,782.36 = 12,119.82/x
  3. Step 3: Cross multiply
    31,841.10x = 47,782.36 × 12,119.82
  4. Step 4: Simplify right side
    31,841.10x = 579,113,602.38
  5. Step 5: Solve for x
    x = 579,113,602.38/31,841.10
  6. Step 6: Final answer
    x = 18,187.61

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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.