Home / 39,620.12-54,675.94-21,715.06

Finding the Fourth Proportional to 39,620.12, 54,675.94 and 21,715.06

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Solution

The fourth proportional to 39,620.12, 54,675.94 and 21,715.06 is: 29,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,620.12 : 54,675.94 = 21,715.06 : x
  2. Step 2: Convert to fraction form
    39,620.12/54,675.94 = 21,715.06/x
  3. Step 3: Cross multiply
    39,620.12x = 54,675.94 × 21,715.06
  4. Step 4: Simplify right side
    39,620.12x = 1,187,291,317.66
  5. Step 5: Solve for x
    x = 1,187,291,317.66/39,620.12
  6. Step 6: Final answer
    x = 29,966.88

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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.