Home / 39,642.30-54,706.23-21,736.85

Finding the Fourth Proportional to 39,642.30, 54,706.23 and 21,736.85

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Solution

The fourth proportional to 39,642.30, 54,706.23 and 21,736.85 is: 29,996.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,642.30 : 54,706.23 = 21,736.85 : x
  2. Step 2: Convert to fraction form
    39,642.30/54,706.23 = 21,736.85/x
  3. Step 3: Cross multiply
    39,642.30x = 54,706.23 × 21,736.85
  4. Step 4: Simplify right side
    39,642.30x = 1,189,140,842.04
  5. Step 5: Solve for x
    x = 1,189,140,842.04/39,642.30
  6. Step 6: Final answer
    x = 29,996.77

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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.