Home / 39,310.53-54,246.69-21,405.48

Finding the Fourth Proportional to 39,310.53, 54,246.69 and 21,405.48

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Solution

The fourth proportional to 39,310.53, 54,246.69 and 21,405.48 is: 29,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,310.53 : 54,246.69 = 21,405.48 : x
  2. Step 2: Convert to fraction form
    39,310.53/54,246.69 = 21,405.48/x
  3. Step 3: Cross multiply
    39,310.53x = 54,246.69 × 21,405.48
  4. Step 4: Simplify right side
    39,310.53x = 1,161,176,437.86
  5. Step 5: Solve for x
    x = 1,161,176,437.86/39,310.53
  6. Step 6: Final answer
    x = 29,538.56

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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.