Home / 10,981.40-16,473.20-3,190.28

Finding the Fourth Proportional to 10,981.40, 16,473.20 and 3,190.28

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Solution

The fourth proportional to 10,981.40, 16,473.20 and 3,190.28 is: 4,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.40 : 16,473.20 = 3,190.28 : x
  2. Step 2: Convert to fraction form
    10,981.40/16,473.20 = 3,190.28/x
  3. Step 3: Cross multiply
    10,981.40x = 16,473.20 × 3,190.28
  4. Step 4: Simplify right side
    10,981.40x = 52,554,120.50
  5. Step 5: Solve for x
    x = 52,554,120.50/10,981.40
  6. Step 6: Final answer
    x = 4,785.74

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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.