Home / 13,331.90-19,979.22-6,309.20

Finding the Fourth Proportional to 13,331.90, 19,979.22 and 6,309.20

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Solution

The fourth proportional to 13,331.90, 19,979.22 and 6,309.20 is: 9,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.90 : 19,979.22 = 6,309.20 : x
  2. Step 2: Convert to fraction form
    13,331.90/19,979.22 = 6,309.20/x
  3. Step 3: Cross multiply
    13,331.90x = 19,979.22 × 6,309.20
  4. Step 4: Simplify right side
    13,331.90x = 126,052,894.82
  5. Step 5: Solve for x
    x = 126,052,894.82/13,331.90
  6. Step 6: Final answer
    x = 9,454.98

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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.