Home / 31,138.89-46,703.31-8,947.22

Finding the Fourth Proportional to 31,138.89, 46,703.31 and 8,947.22

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Solution

The fourth proportional to 31,138.89, 46,703.31 and 8,947.22 is: 13,419.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,138.89 : 46,703.31 = 8,947.22 : x
  2. Step 2: Convert to fraction form
    31,138.89/46,703.31 = 8,947.22/x
  3. Step 3: Cross multiply
    31,138.89x = 46,703.31 × 8,947.22
  4. Step 4: Simplify right side
    31,138.89x = 417,864,555.78
  5. Step 5: Solve for x
    x = 417,864,555.78/31,138.89
  6. Step 6: Final answer
    x = 13,419.38

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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.