Home / 39,378.46-54,343.41-21,473.81

Finding the Fourth Proportional to 39,378.46, 54,343.41 and 21,473.81

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Solution

The fourth proportional to 39,378.46, 54,343.41 and 21,473.81 is: 29,634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.46 : 54,343.41 = 21,473.81 : x
  2. Step 2: Convert to fraction form
    39,378.46/54,343.41 = 21,473.81/x
  3. Step 3: Cross multiply
    39,378.46x = 54,343.41 × 21,473.81
  4. Step 4: Simplify right side
    39,378.46x = 1,166,960,061.09
  5. Step 5: Solve for x
    x = 1,166,960,061.09/39,378.46
  6. Step 6: Final answer
    x = 29,634.48

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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.