Home / 22,142.94-30,568.16-15,342.11

Finding the Fourth Proportional to 22,142.94, 30,568.16 and 15,342.11

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Solution

The fourth proportional to 22,142.94, 30,568.16 and 15,342.11 is: 21,179.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,142.94 : 30,568.16 = 15,342.11 : x
  2. Step 2: Convert to fraction form
    22,142.94/30,568.16 = 15,342.11/x
  3. Step 3: Cross multiply
    22,142.94x = 30,568.16 × 15,342.11
  4. Step 4: Simplify right side
    22,142.94x = 468,979,996.51
  5. Step 5: Solve for x
    x = 468,979,996.51/22,142.94
  6. Step 6: Final answer
    x = 21,179.67

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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.