Home / 31,789.08-47,678.04-17,763.12

Finding the Fourth Proportional to 31,789.08, 47,678.04 and 17,763.12

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Solution

The fourth proportional to 31,789.08, 47,678.04 and 17,763.12 is: 26,641.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.08 : 47,678.04 = 17,763.12 : x
  2. Step 2: Convert to fraction form
    31,789.08/47,678.04 = 17,763.12/x
  3. Step 3: Cross multiply
    31,789.08x = 47,678.04 × 17,763.12
  4. Step 4: Simplify right side
    31,789.08x = 846,910,745.88
  5. Step 5: Solve for x
    x = 846,910,745.88/31,789.08
  6. Step 6: Final answer
    x = 26,641.56

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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.