Home / 20,380,396.28-28,125,170.38-11,088,019.56

Finding the Fourth Proportional to 20,380,396.28, 28,125,170.38 and 11,088,019.56

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Solution

The fourth proportional to 20,380,396.28, 28,125,170.38 and 11,088,019.56 is: 15,301,588.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,396.28 : 28,125,170.38 = 11,088,019.56 : x
  2. Step 2: Convert to fraction form
    20,380,396.28/28,125,170.38 = 11,088,019.56/x
  3. Step 3: Cross multiply
    20,380,396.28x = 28,125,170.38 × 11,088,019.56
  4. Step 4: Simplify right side
    20,380,396.28x = 311,852,439,301,772.62
  5. Step 5: Solve for x
    x = 311,852,439,301,772.62/20,380,396.28
  6. Step 6: Final answer
    x = 15,301,588.60

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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.