Home / 39,310.37-54,248.96-21,405.72

Finding the Fourth Proportional to 39,310.37, 54,248.96 and 21,405.72

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Solution

The fourth proportional to 39,310.37, 54,248.96 and 21,405.72 is: 29,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,310.37 : 54,248.96 = 21,405.72 : x
  2. Step 2: Convert to fraction form
    39,310.37/54,248.96 = 21,405.72/x
  3. Step 3: Cross multiply
    39,310.37x = 54,248.96 × 21,405.72
  4. Step 4: Simplify right side
    39,310.37x = 1,161,238,184.59
  5. Step 5: Solve for x
    x = 1,161,238,184.59/39,310.37
  6. Step 6: Final answer
    x = 29,540.25

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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.