Home / 39,624.98-54,682.86-21,720.34

Finding the Fourth Proportional to 39,624.98, 54,682.86 and 21,720.34

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Solution

The fourth proportional to 39,624.98, 54,682.86 and 21,720.34 is: 29,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,624.98 : 54,682.86 = 21,720.34 : x
  2. Step 2: Convert to fraction form
    39,624.98/54,682.86 = 21,720.34/x
  3. Step 3: Cross multiply
    39,624.98x = 54,682.86 × 21,720.34
  4. Step 4: Simplify right side
    39,624.98x = 1,187,730,311.37
  5. Step 5: Solve for x
    x = 1,187,730,311.37/39,624.98
  6. Step 6: Final answer
    x = 29,974.28

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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.