Home / 28,173.34-38,878.01-15,426.29

Finding the Fourth Proportional to 28,173.34, 38,878.01 and 15,426.29

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Solution

The fourth proportional to 28,173.34, 38,878.01 and 15,426.29 is: 21,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.34 : 38,878.01 = 15,426.29 : x
  2. Step 2: Convert to fraction form
    28,173.34/38,878.01 = 15,426.29/x
  3. Step 3: Cross multiply
    28,173.34x = 38,878.01 × 15,426.29
  4. Step 4: Simplify right side
    28,173.34x = 599,743,456.88
  5. Step 5: Solve for x
    x = 599,743,456.88/28,173.34
  6. Step 6: Final answer
    x = 21,287.62

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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.