Home / 22,109.66-30,510.62-13,155.11

Finding the Fourth Proportional to 22,109.66, 30,510.62 and 13,155.11

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Solution

The fourth proportional to 22,109.66, 30,510.62 and 13,155.11 is: 18,153.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,109.66 : 30,510.62 = 13,155.11 : x
  2. Step 2: Convert to fraction form
    22,109.66/30,510.62 = 13,155.11/x
  3. Step 3: Cross multiply
    22,109.66x = 30,510.62 × 13,155.11
  4. Step 4: Simplify right side
    22,109.66x = 401,370,581.68
  5. Step 5: Solve for x
    x = 401,370,581.68/22,109.66
  6. Step 6: Final answer
    x = 18,153.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.