Home / 39,172.79-54,058.15-21,267.44

Finding the Fourth Proportional to 39,172.79, 54,058.15 and 21,267.44

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Solution

The fourth proportional to 39,172.79, 54,058.15 and 21,267.44 is: 29,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.79 : 54,058.15 = 21,267.44 : x
  2. Step 2: Convert to fraction form
    39,172.79/54,058.15 = 21,267.44/x
  3. Step 3: Cross multiply
    39,172.79x = 54,058.15 × 21,267.44
  4. Step 4: Simplify right side
    39,172.79x = 1,149,678,461.64
  5. Step 5: Solve for x
    x = 1,149,678,461.64/39,172.79
  6. Step 6: Final answer
    x = 29,348.90

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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.