Home / 15,148.73-20,906.61-8,435.86

Finding the Fourth Proportional to 15,148.73, 20,906.61 and 8,435.86

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Solution

The fourth proportional to 15,148.73, 20,906.61 and 8,435.86 is: 11,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.73 : 20,906.61 = 8,435.86 : x
  2. Step 2: Convert to fraction form
    15,148.73/20,906.61 = 8,435.86/x
  3. Step 3: Cross multiply
    15,148.73x = 20,906.61 × 8,435.86
  4. Step 4: Simplify right side
    15,148.73x = 176,365,235.03
  5. Step 5: Solve for x
    x = 176,365,235.03/15,148.73
  6. Step 6: Final answer
    x = 11,642.25

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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.