Home / 31,505.01-43,472.81-20,175.56

Finding the Fourth Proportional to 31,505.01, 43,472.81 and 20,175.56

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Solution

The fourth proportional to 31,505.01, 43,472.81 and 20,175.56 is: 27,839.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.01 : 43,472.81 = 20,175.56 : x
  2. Step 2: Convert to fraction form
    31,505.01/43,472.81 = 20,175.56/x
  3. Step 3: Cross multiply
    31,505.01x = 43,472.81 × 20,175.56
  4. Step 4: Simplify right side
    31,505.01x = 877,088,051.84
  5. Step 5: Solve for x
    x = 877,088,051.84/31,505.01
  6. Step 6: Final answer
    x = 27,839.64

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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.