Home / 28,853.28-39,813.12-18,257.40

Finding the Fourth Proportional to 28,853.28, 39,813.12 and 18,257.40

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Solution

The fourth proportional to 28,853.28, 39,813.12 and 18,257.40 is: 25,192.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853.28 : 39,813.12 = 18,257.40 : x
  2. Step 2: Convert to fraction form
    28,853.28/39,813.12 = 18,257.40/x
  3. Step 3: Cross multiply
    28,853.28x = 39,813.12 × 18,257.40
  4. Step 4: Simplify right side
    28,853.28x = 726,884,057.09
  5. Step 5: Solve for x
    x = 726,884,057.09/28,853.28
  6. Step 6: Final answer
    x = 25,192.42

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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.