Home / 16,981.11-25,472.48-7,120.71

Finding the Fourth Proportional to 16,981.11, 25,472.48 and 7,120.71

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Solution

The fourth proportional to 16,981.11, 25,472.48 and 7,120.71 is: 10,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.11 : 25,472.48 = 7,120.71 : x
  2. Step 2: Convert to fraction form
    16,981.11/25,472.48 = 7,120.71/x
  3. Step 3: Cross multiply
    16,981.11x = 25,472.48 × 7,120.71
  4. Step 4: Simplify right side
    16,981.11x = 181,382,107.46
  5. Step 5: Solve for x
    x = 181,382,107.46/16,981.11
  6. Step 6: Final answer
    x = 10,681.40

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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.