Home / 39,620.61-54,676.89-21,715.23

Finding the Fourth Proportional to 39,620.61, 54,676.89 and 21,715.23

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Solution

The fourth proportional to 39,620.61, 54,676.89 and 21,715.23 is: 29,967.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,620.61 : 54,676.89 = 21,715.23 : x
  2. Step 2: Convert to fraction form
    39,620.61/54,676.89 = 21,715.23/x
  3. Step 3: Cross multiply
    39,620.61x = 54,676.89 × 21,715.23
  4. Step 4: Simplify right side
    39,620.61x = 1,187,321,242.03
  5. Step 5: Solve for x
    x = 1,187,321,242.03/39,620.61
  6. Step 6: Final answer
    x = 29,967.26

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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.