Home / 39,331.09-54,276.46-21,426.09

Finding the Fourth Proportional to 39,331.09, 54,276.46 and 21,426.09

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Solution

The fourth proportional to 39,331.09, 54,276.46 and 21,426.09 is: 29,567.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,331.09 : 54,276.46 = 21,426.09 : x
  2. Step 2: Convert to fraction form
    39,331.09/54,276.46 = 21,426.09/x
  3. Step 3: Cross multiply
    39,331.09x = 54,276.46 × 21,426.09
  4. Step 4: Simplify right side
    39,331.09x = 1,162,932,316.84
  5. Step 5: Solve for x
    x = 1,162,932,316.84/39,331.09
  6. Step 6: Final answer
    x = 29,567.76

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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.