Home / 13,187.88-19,784.79-4,422.57

Finding the Fourth Proportional to 13,187.88, 19,784.79 and 4,422.57

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Solution

The fourth proportional to 13,187.88, 19,784.79 and 4,422.57 is: 6,634.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.88 : 19,784.79 = 4,422.57 : x
  2. Step 2: Convert to fraction form
    13,187.88/19,784.79 = 4,422.57/x
  3. Step 3: Cross multiply
    13,187.88x = 19,784.79 × 4,422.57
  4. Step 4: Simplify right side
    13,187.88x = 87,499,618.71
  5. Step 5: Solve for x
    x = 87,499,618.71/13,187.88
  6. Step 6: Final answer
    x = 6,634.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.