Home / 31,424.88-47,139.96-8,935.44

Finding the Fourth Proportional to 31,424.88, 47,139.96 and 8,935.44

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Solution

The fourth proportional to 31,424.88, 47,139.96 and 8,935.44 is: 13,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424.88 : 47,139.96 = 8,935.44 : x
  2. Step 2: Convert to fraction form
    31,424.88/47,139.96 = 8,935.44/x
  3. Step 3: Cross multiply
    31,424.88x = 47,139.96 × 8,935.44
  4. Step 4: Simplify right side
    31,424.88x = 421,216,284.18
  5. Step 5: Solve for x
    x = 421,216,284.18/31,424.88
  6. Step 6: Final answer
    x = 13,403.91

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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.