Home / 39,869.46-55,022.38-21,964.48

Finding the Fourth Proportional to 39,869.46, 55,022.38 and 21,964.48

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Solution

The fourth proportional to 39,869.46, 55,022.38 and 21,964.48 is: 30,312.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,869.46 : 55,022.38 = 21,964.48 : x
  2. Step 2: Convert to fraction form
    39,869.46/55,022.38 = 21,964.48/x
  3. Step 3: Cross multiply
    39,869.46x = 55,022.38 × 21,964.48
  4. Step 4: Simplify right side
    39,869.46x = 1,208,537,965.06
  5. Step 5: Solve for x
    x = 1,208,537,965.06/39,869.46
  6. Step 6: Final answer
    x = 30,312.37

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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.