Home / 25,991.20-38,979.89-7,270.08

Finding the Fourth Proportional to 25,991.20, 38,979.89 and 7,270.08

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Solution

The fourth proportional to 25,991.20, 38,979.89 and 7,270.08 is: 10,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.20 : 38,979.89 = 7,270.08 : x
  2. Step 2: Convert to fraction form
    25,991.20/38,979.89 = 7,270.08/x
  3. Step 3: Cross multiply
    25,991.20x = 38,979.89 × 7,270.08
  4. Step 4: Simplify right side
    25,991.20x = 283,386,784.89
  5. Step 5: Solve for x
    x = 283,386,784.89/25,991.20
  6. Step 6: Final answer
    x = 10,903.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.