Home / 10,990.20-16,491.21-7,294.17

Finding the Fourth Proportional to 10,990.20, 16,491.21 and 7,294.17

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Solution

The fourth proportional to 10,990.20, 16,491.21 and 7,294.17 is: 10,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.20 : 16,491.21 = 7,294.17 : x
  2. Step 2: Convert to fraction form
    10,990.20/16,491.21 = 7,294.17/x
  3. Step 3: Cross multiply
    10,990.20x = 16,491.21 × 7,294.17
  4. Step 4: Simplify right side
    10,990.20x = 120,289,689.25
  5. Step 5: Solve for x
    x = 120,289,689.25/10,990.20
  6. Step 6: Final answer
    x = 10,945.18

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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.