Home / 20,972.44-31,419.60-10,430.38

Finding the Fourth Proportional to 20,972.44, 31,419.60 and 10,430.38

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Solution

The fourth proportional to 20,972.44, 31,419.60 and 10,430.38 is: 15,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.44 : 31,419.60 = 10,430.38 : x
  2. Step 2: Convert to fraction form
    20,972.44/31,419.60 = 10,430.38/x
  3. Step 3: Cross multiply
    20,972.44x = 31,419.60 × 10,430.38
  4. Step 4: Simplify right side
    20,972.44x = 327,718,367.45
  5. Step 5: Solve for x
    x = 327,718,367.45/20,972.44
  6. Step 6: Final answer
    x = 15,626.14

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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.