Home / 31,352.90-47,028.11-7,979.94

Finding the Fourth Proportional to 31,352.90, 47,028.11 and 7,979.94

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Solution

The fourth proportional to 31,352.90, 47,028.11 and 7,979.94 is: 11,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,352.90 : 47,028.11 = 7,979.94 : x
  2. Step 2: Convert to fraction form
    31,352.90/47,028.11 = 7,979.94/x
  3. Step 3: Cross multiply
    31,352.90x = 47,028.11 × 7,979.94
  4. Step 4: Simplify right side
    31,352.90x = 375,281,456.21
  5. Step 5: Solve for x
    x = 375,281,456.21/31,352.90
  6. Step 6: Final answer
    x = 11,969.60

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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.