Home / 15,150.51-20,908.35-8,435.88

Finding the Fourth Proportional to 15,150.51, 20,908.35 and 8,435.88

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Solution

The fourth proportional to 15,150.51, 20,908.35 and 8,435.88 is: 11,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.51 : 20,908.35 = 8,435.88 : x
  2. Step 2: Convert to fraction form
    15,150.51/20,908.35 = 8,435.88/x
  3. Step 3: Cross multiply
    15,150.51x = 20,908.35 × 8,435.88
  4. Step 4: Simplify right side
    15,150.51x = 176,380,331.60
  5. Step 5: Solve for x
    x = 176,380,331.60/15,150.51
  6. Step 6: Final answer
    x = 11,641.87

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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.