Home / 13,221.97-19,835.59-4,459.39

Finding the Fourth Proportional to 13,221.97, 19,835.59 and 4,459.39

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Solution

The fourth proportional to 13,221.97, 19,835.59 and 4,459.39 is: 6,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.97 : 19,835.59 = 4,459.39 : x
  2. Step 2: Convert to fraction form
    13,221.97/19,835.59 = 4,459.39/x
  3. Step 3: Cross multiply
    13,221.97x = 19,835.59 × 4,459.39
  4. Step 4: Simplify right side
    13,221.97x = 88,454,631.69
  5. Step 5: Solve for x
    x = 88,454,631.69/13,221.97
  6. Step 6: Final answer
    x = 6,689.97

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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.