Home / 31,104.30-46,656.45-21,125.10

Finding the Fourth Proportional to 31,104.30, 46,656.45 and 21,125.10

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Solution

The fourth proportional to 31,104.30, 46,656.45 and 21,125.10 is: 31,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,104.30 : 46,656.45 = 21,125.10 : x
  2. Step 2: Convert to fraction form
    31,104.30/46,656.45 = 21,125.10/x
  3. Step 3: Cross multiply
    31,104.30x = 46,656.45 × 21,125.10
  4. Step 4: Simplify right side
    31,104.30x = 985,622,171.90
  5. Step 5: Solve for x
    x = 985,622,171.90/31,104.30
  6. Step 6: Final answer
    x = 31,687.65

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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.