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Finding the Fourth Proportional to 31,174.80, 46,710.90 and 18,004.20

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Solution

The fourth proportional to 31,174.80, 46,710.90 and 18,004.20 is: 26,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,174.80 : 46,710.90 = 18,004.20 : x
  2. Step 2: Convert to fraction form
    31,174.80/46,710.90 = 18,004.20/x
  3. Step 3: Cross multiply
    31,174.80x = 46,710.90 × 18,004.20
  4. Step 4: Simplify right side
    31,174.80x = 840,992,385.78
  5. Step 5: Solve for x
    x = 840,992,385.78/31,174.80
  6. Step 6: Final answer
    x = 26,976.67

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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.