Home / 13,815.48-19,065.67-8,151.61

Finding the Fourth Proportional to 13,815.48, 19,065.67 and 8,151.61

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Solution

The fourth proportional to 13,815.48, 19,065.67 and 8,151.61 is: 11,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.48 : 19,065.67 = 8,151.61 : x
  2. Step 2: Convert to fraction form
    13,815.48/19,065.67 = 8,151.61/x
  3. Step 3: Cross multiply
    13,815.48x = 19,065.67 × 8,151.61
  4. Step 4: Simplify right side
    13,815.48x = 155,415,906.23
  5. Step 5: Solve for x
    x = 155,415,906.23/13,815.48
  6. Step 6: Final answer
    x = 11,249.40

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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.