Home / 39,310.32-54,246.39-21,405.27

Finding the Fourth Proportional to 39,310.32, 54,246.39 and 21,405.27

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Solution

The fourth proportional to 39,310.32, 54,246.39 and 21,405.27 is: 29,538.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,310.32 : 54,246.39 = 21,405.27 : x
  2. Step 2: Convert to fraction form
    39,310.32/54,246.39 = 21,405.27/x
  3. Step 3: Cross multiply
    39,310.32x = 54,246.39 × 21,405.27
  4. Step 4: Simplify right side
    39,310.32x = 1,161,158,715.47
  5. Step 5: Solve for x
    x = 1,161,158,715.47/39,310.32
  6. Step 6: Final answer
    x = 29,538.27

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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.