Home / 39,302.92-54,239.16-21,398.23

Finding the Fourth Proportional to 39,302.92, 54,239.16 and 21,398.23

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Solution

The fourth proportional to 39,302.92, 54,239.16 and 21,398.23 is: 29,530.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,302.92 : 54,239.16 = 21,398.23 : x
  2. Step 2: Convert to fraction form
    39,302.92/54,239.16 = 21,398.23/x
  3. Step 3: Cross multiply
    39,302.92x = 54,239.16 × 21,398.23
  4. Step 4: Simplify right side
    39,302.92x = 1,160,622,020.69
  5. Step 5: Solve for x
    x = 1,160,622,020.69/39,302.92
  6. Step 6: Final answer
    x = 29,530.17

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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.