Home / 20,402.28-28,155.65-11,450.46

Finding the Fourth Proportional to 20,402.28, 28,155.65 and 11,450.46

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Solution

The fourth proportional to 20,402.28, 28,155.65 and 11,450.46 is: 15,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.28 : 28,155.65 = 11,450.46 : x
  2. Step 2: Convert to fraction form
    20,402.28/28,155.65 = 11,450.46/x
  3. Step 3: Cross multiply
    20,402.28x = 28,155.65 × 11,450.46
  4. Step 4: Simplify right side
    20,402.28x = 322,395,256.84
  5. Step 5: Solve for x
    x = 322,395,256.84/20,402.28
  6. Step 6: Final answer
    x = 15,801.92

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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.