Home / 20,435.28-28,200.49-11,483.56

Finding the Fourth Proportional to 20,435.28, 28,200.49 and 11,483.56

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Solution

The fourth proportional to 20,435.28, 28,200.49 and 11,483.56 is: 15,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.28 : 28,200.49 = 11,483.56 : x
  2. Step 2: Convert to fraction form
    20,435.28/28,200.49 = 11,483.56/x
  3. Step 3: Cross multiply
    20,435.28x = 28,200.49 × 11,483.56
  4. Step 4: Simplify right side
    20,435.28x = 323,842,018.94
  5. Step 5: Solve for x
    x = 323,842,018.94/20,435.28
  6. Step 6: Final answer
    x = 15,847.20

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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.