Home / 25,401.87-38,103.89-7,871.31

Finding the Fourth Proportional to 25,401.87, 38,103.89 and 7,871.31

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Solution

The fourth proportional to 25,401.87, 38,103.89 and 7,871.31 is: 11,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,401.87 : 38,103.89 = 7,871.31 : x
  2. Step 2: Convert to fraction form
    25,401.87/38,103.89 = 7,871.31/x
  3. Step 3: Cross multiply
    25,401.87x = 38,103.89 × 7,871.31
  4. Step 4: Simplify right side
    25,401.87x = 299,927,491.04
  5. Step 5: Solve for x
    x = 299,927,491.04/25,401.87
  6. Step 6: Final answer
    x = 11,807.30

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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.