Home / 13,113.42-19,656.79-5,221.52

Finding the Fourth Proportional to 13,113.42, 19,656.79 and 5,221.52

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Solution

The fourth proportional to 13,113.42, 19,656.79 and 5,221.52 is: 7,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.42 : 19,656.79 = 5,221.52 : x
  2. Step 2: Convert to fraction form
    13,113.42/19,656.79 = 5,221.52/x
  3. Step 3: Cross multiply
    13,113.42x = 19,656.79 × 5,221.52
  4. Step 4: Simplify right side
    13,113.42x = 102,638,284.50
  5. Step 5: Solve for x
    x = 102,638,284.50/13,113.42
  6. Step 6: Final answer
    x = 7,826.97

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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.