Home / 31,330.89-46,999.77-9,147.90

Finding the Fourth Proportional to 31,330.89, 46,999.77 and 9,147.90

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Solution

The fourth proportional to 31,330.89, 46,999.77 and 9,147.90 is: 13,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.89 : 46,999.77 = 9,147.90 : x
  2. Step 2: Convert to fraction form
    31,330.89/46,999.77 = 9,147.90/x
  3. Step 3: Cross multiply
    31,330.89x = 46,999.77 × 9,147.90
  4. Step 4: Simplify right side
    31,330.89x = 429,949,195.98
  5. Step 5: Solve for x
    x = 429,949,195.98/31,330.89
  6. Step 6: Final answer
    x = 13,722.85

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1.5x scale

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.