Home / 21,137.42-31,707.94-5,555

Finding the Fourth Proportional to 21,137.42, 31,707.94 and 5,555

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Solution

The fourth proportional to 21,137.42, 31,707.94 and 5,555 is: 8,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.42 : 31,707.94 = 5,555 : x
  2. Step 2: Convert to fraction form
    21,137.42/31,707.94 = 5,555/x
  3. Step 3: Cross multiply
    21,137.42x = 31,707.94 × 5,555
  4. Step 4: Simplify right side
    21,137.42x = 176,137,606.70
  5. Step 5: Solve for x
    x = 176,137,606.70/21,137.42
  6. Step 6: Final answer
    x = 8,332.98

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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.