Home / 31,699.13-43,758.93-20,950.48

Finding the Fourth Proportional to 31,699.13, 43,758.93 and 20,950.48

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Solution

The fourth proportional to 31,699.13, 43,758.93 and 20,950.48 is: 28,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.13 : 43,758.93 = 20,950.48 : x
  2. Step 2: Convert to fraction form
    31,699.13/43,758.93 = 20,950.48/x
  3. Step 3: Cross multiply
    31,699.13x = 43,758.93 × 20,950.48
  4. Step 4: Simplify right side
    31,699.13x = 916,770,721.05
  5. Step 5: Solve for x
    x = 916,770,721.05/31,699.13
  6. Step 6: Final answer
    x = 28,921.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.