Home / 31,675.70-43,700.03-20,343.62

Finding the Fourth Proportional to 31,675.70, 43,700.03 and 20,343.62

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Solution

The fourth proportional to 31,675.70, 43,700.03 and 20,343.62 is: 28,066.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,675.70 : 43,700.03 = 20,343.62 : x
  2. Step 2: Convert to fraction form
    31,675.70/43,700.03 = 20,343.62/x
  3. Step 3: Cross multiply
    31,675.70x = 43,700.03 × 20,343.62
  4. Step 4: Simplify right side
    31,675.70x = 889,016,945.35
  5. Step 5: Solve for x
    x = 889,016,945.35/31,675.70
  6. Step 6: Final answer
    x = 28,066.21

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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.