Home / 39,440.57-54,428.75-21,536.28

Finding the Fourth Proportional to 39,440.57, 54,428.75 and 21,536.28

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Solution

The fourth proportional to 39,440.57, 54,428.75 and 21,536.28 is: 29,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.57 : 54,428.75 = 21,536.28 : x
  2. Step 2: Convert to fraction form
    39,440.57/54,428.75 = 21,536.28/x
  3. Step 3: Cross multiply
    39,440.57x = 54,428.75 × 21,536.28
  4. Step 4: Simplify right side
    39,440.57x = 1,172,192,692.37
  5. Step 5: Solve for x
    x = 1,172,192,692.37/39,440.57
  6. Step 6: Final answer
    x = 29,720.48

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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.