Home / 39,279.20-54,203.67-21,374.24

Finding the Fourth Proportional to 39,279.20, 54,203.67 and 21,374.24

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Solution

The fourth proportional to 39,279.20, 54,203.67 and 21,374.24 is: 29,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.20 : 54,203.67 = 21,374.24 : x
  2. Step 2: Convert to fraction form
    39,279.20/54,203.67 = 21,374.24/x
  3. Step 3: Cross multiply
    39,279.20x = 54,203.67 × 21,374.24
  4. Step 4: Simplify right side
    39,279.20x = 1,158,561,980.44
  5. Step 5: Solve for x
    x = 1,158,561,980.44/39,279.20
  6. Step 6: Final answer
    x = 29,495.56

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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.