Home / 39,331.05-54,276.58-21,426.07

Finding the Fourth Proportional to 39,331.05, 54,276.58 and 21,426.07

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Solution

The fourth proportional to 39,331.05, 54,276.58 and 21,426.07 is: 29,567.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,331.05 : 54,276.58 = 21,426.07 : x
  2. Step 2: Convert to fraction form
    39,331.05/54,276.58 = 21,426.07/x
  3. Step 3: Cross multiply
    39,331.05x = 54,276.58 × 21,426.07
  4. Step 4: Simplify right side
    39,331.05x = 1,162,933,802.44
  5. Step 5: Solve for x
    x = 1,162,933,802.44/39,331.05
  6. Step 6: Final answer
    x = 29,567.83

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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.