Home / 20,402.28-30,580.38-10,021.32

Finding the Fourth Proportional to 20,402.28, 30,580.38 and 10,021.32

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Solution

The fourth proportional to 20,402.28, 30,580.38 and 10,021.32 is: 15,020.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.28 : 30,580.38 = 10,021.32 : x
  2. Step 2: Convert to fraction form
    20,402.28/30,580.38 = 10,021.32/x
  3. Step 3: Cross multiply
    20,402.28x = 30,580.38 × 10,021.32
  4. Step 4: Simplify right side
    20,402.28x = 306,455,773.70
  5. Step 5: Solve for x
    x = 306,455,773.70/20,402.28
  6. Step 6: Final answer
    x = 15,020.66

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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.