Home / 16,731.91-23,089.87-9,178.09

Finding the Fourth Proportional to 16,731.91, 23,089.87 and 9,178.09

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Solution

The fourth proportional to 16,731.91, 23,089.87 and 9,178.09 is: 12,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,731.91 : 23,089.87 = 9,178.09 : x
  2. Step 2: Convert to fraction form
    16,731.91/23,089.87 = 9,178.09/x
  3. Step 3: Cross multiply
    16,731.91x = 23,089.87 × 9,178.09
  4. Step 4: Simplify right side
    16,731.91x = 211,920,743.61
  5. Step 5: Solve for x
    x = 211,920,743.61/16,731.91
  6. Step 6: Final answer
    x = 12,665.67

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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.