Home / 39,310.52-54,247.74-21,405.74

Finding the Fourth Proportional to 39,310.52, 54,247.74 and 21,405.74

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Solution

The fourth proportional to 39,310.52, 54,247.74 and 21,405.74 is: 29,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,310.52 : 54,247.74 = 21,405.74 : x
  2. Step 2: Convert to fraction form
    39,310.52/54,247.74 = 21,405.74/x
  3. Step 3: Cross multiply
    39,310.52x = 54,247.74 × 21,405.74
  4. Step 4: Simplify right side
    39,310.52x = 1,161,213,018.03
  5. Step 5: Solve for x
    x = 1,161,213,018.03/39,310.52
  6. Step 6: Final answer
    x = 29,539.50

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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.