Home / 31,125.21-46,680.70-8,938.41

Finding the Fourth Proportional to 31,125.21, 46,680.70 and 8,938.41

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Solution

The fourth proportional to 31,125.21, 46,680.70 and 8,938.41 is: 13,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.21 : 46,680.70 = 8,938.41 : x
  2. Step 2: Convert to fraction form
    31,125.21/46,680.70 = 8,938.41/x
  3. Step 3: Cross multiply
    31,125.21x = 46,680.70 × 8,938.41
  4. Step 4: Simplify right side
    31,125.21x = 417,251,235.69
  5. Step 5: Solve for x
    x = 417,251,235.69/31,125.21
  6. Step 6: Final answer
    x = 13,405.57

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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.