Home / 39,622.98-54,680.10-21,718.34

Finding the Fourth Proportional to 39,622.98, 54,680.10 and 21,718.34

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Solution

The fourth proportional to 39,622.98, 54,680.10 and 21,718.34 is: 29,971.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,622.98 : 54,680.10 = 21,718.34 : x
  2. Step 2: Convert to fraction form
    39,622.98/54,680.10 = 21,718.34/x
  3. Step 3: Cross multiply
    39,622.98x = 54,680.10 × 21,718.34
  4. Step 4: Simplify right side
    39,622.98x = 1,187,560,853.24
  5. Step 5: Solve for x
    x = 1,187,560,853.24/39,622.98
  6. Step 6: Final answer
    x = 29,971.52

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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.