Home / 22,945.28-31,678.68-15,299.32

Finding the Fourth Proportional to 22,945.28, 31,678.68 and 15,299.32

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Solution

The fourth proportional to 22,945.28, 31,678.68 and 15,299.32 is: 21,122.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,945.28 : 31,678.68 = 15,299.32 : x
  2. Step 2: Convert to fraction form
    22,945.28/31,678.68 = 15,299.32/x
  3. Step 3: Cross multiply
    22,945.28x = 31,678.68 × 15,299.32
  4. Step 4: Simplify right side
    22,945.28x = 484,662,262.50
  5. Step 5: Solve for x
    x = 484,662,262.50/22,945.28
  6. Step 6: Final answer
    x = 21,122.53

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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.