Home / 11,981.16-17,923.56-10,355.16

Finding the Fourth Proportional to 11,981.16, 17,923.56 and 10,355.16

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Solution

The fourth proportional to 11,981.16, 17,923.56 and 10,355.16 is: 15,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.16 : 17,923.56 = 10,355.16 : x
  2. Step 2: Convert to fraction form
    11,981.16/17,923.56 = 10,355.16/x
  3. Step 3: Cross multiply
    11,981.16x = 17,923.56 × 10,355.16
  4. Step 4: Simplify right side
    11,981.16x = 185,601,331.57
  5. Step 5: Solve for x
    x = 185,601,331.57/11,981.16
  6. Step 6: Final answer
    x = 15,491.10

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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.