Home / 31,912.50-47,868.75-8,538.33

Finding the Fourth Proportional to 31,912.50, 47,868.75 and 8,538.33

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Solution

The fourth proportional to 31,912.50, 47,868.75 and 8,538.33 is: 12,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,912.50 : 47,868.75 = 8,538.33 : x
  2. Step 2: Convert to fraction form
    31,912.50/47,868.75 = 8,538.33/x
  3. Step 3: Cross multiply
    31,912.50x = 47,868.75 × 8,538.33
  4. Step 4: Simplify right side
    31,912.50x = 408,719,184.19
  5. Step 5: Solve for x
    x = 408,719,184.19/31,912.50
  6. Step 6: Final answer
    x = 12,807.50

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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.