Home / 31,391.66-47,087.57-7,699.31

Finding the Fourth Proportional to 31,391.66, 47,087.57 and 7,699.31

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Solution

The fourth proportional to 31,391.66, 47,087.57 and 7,699.31 is: 11,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.66 : 47,087.57 = 7,699.31 : x
  2. Step 2: Convert to fraction form
    31,391.66/47,087.57 = 7,699.31/x
  3. Step 3: Cross multiply
    31,391.66x = 47,087.57 × 7,699.31
  4. Step 4: Simplify right side
    31,391.66x = 362,541,524.64
  5. Step 5: Solve for x
    x = 362,541,524.64/31,391.66
  6. Step 6: Final answer
    x = 11,548.98

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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.