Home / 16,807.78-25,215.30-5,120.68

Finding the Fourth Proportional to 16,807.78, 25,215.30 and 5,120.68

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Solution

The fourth proportional to 16,807.78, 25,215.30 and 5,120.68 is: 7,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,807.78 : 25,215.30 = 5,120.68 : x
  2. Step 2: Convert to fraction form
    16,807.78/25,215.30 = 5,120.68/x
  3. Step 3: Cross multiply
    16,807.78x = 25,215.30 × 5,120.68
  4. Step 4: Simplify right side
    16,807.78x = 129,119,482.40
  5. Step 5: Solve for x
    x = 129,119,482.40/16,807.78
  6. Step 6: Final answer
    x = 7,682.13

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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.