Home / 39,279.24-54,205.09-21,374.31

Finding the Fourth Proportional to 39,279.24, 54,205.09 and 21,374.31

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Solution

The fourth proportional to 39,279.24, 54,205.09 and 21,374.31 is: 29,496.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.24 : 54,205.09 = 21,374.31 : x
  2. Step 2: Convert to fraction form
    39,279.24/54,205.09 = 21,374.31/x
  3. Step 3: Cross multiply
    39,279.24x = 54,205.09 × 21,374.31
  4. Step 4: Simplify right side
    39,279.24x = 1,158,596,397.24
  5. Step 5: Solve for x
    x = 1,158,596,397.24/39,279.24
  6. Step 6: Final answer
    x = 29,496.41

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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.