Home / 10,921.40-16,391.70-9,366.20

Finding the Fourth Proportional to 10,921.40, 16,391.70 and 9,366.20

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Solution

The fourth proportional to 10,921.40, 16,391.70 and 9,366.20 is: 14,057.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.40 : 16,391.70 = 9,366.20 : x
  2. Step 2: Convert to fraction form
    10,921.40/16,391.70 = 9,366.20/x
  3. Step 3: Cross multiply
    10,921.40x = 16,391.70 × 9,366.20
  4. Step 4: Simplify right side
    10,921.40x = 153,527,940.54
  5. Step 5: Solve for x
    x = 153,527,940.54/10,921.40
  6. Step 6: Final answer
    x = 14,057.53

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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.