Home / 16,981.36-25,472.85-7,120.96

Finding the Fourth Proportional to 16,981.36, 25,472.85 and 7,120.96

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Solution

The fourth proportional to 16,981.36, 25,472.85 and 7,120.96 is: 10,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.36 : 25,472.85 = 7,120.96 : x
  2. Step 2: Convert to fraction form
    16,981.36/25,472.85 = 7,120.96/x
  3. Step 3: Cross multiply
    16,981.36x = 25,472.85 × 7,120.96
  4. Step 4: Simplify right side
    16,981.36x = 181,391,145.94
  5. Step 5: Solve for x
    x = 181,391,145.94/16,981.36
  6. Step 6: Final answer
    x = 10,681.78

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1.5x scale

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.