Home / 16,981.61-25,473.23-7,121.21

Finding the Fourth Proportional to 16,981.61, 25,473.23 and 7,121.21

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Solution

The fourth proportional to 16,981.61, 25,473.23 and 7,121.21 is: 10,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.61 : 25,473.23 = 7,121.21 : x
  2. Step 2: Convert to fraction form
    16,981.61/25,473.23 = 7,121.21/x
  3. Step 3: Cross multiply
    16,981.61x = 25,473.23 × 7,121.21
  4. Step 4: Simplify right side
    16,981.61x = 181,400,184.60
  5. Step 5: Solve for x
    x = 181,400,184.60/16,981.61
  6. Step 6: Final answer
    x = 10,682.15

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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.