Home / 14,189.18-19,580.96-8,220.72

Finding the Fourth Proportional to 14,189.18, 19,580.96 and 8,220.72

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Solution

The fourth proportional to 14,189.18, 19,580.96 and 8,220.72 is: 11,344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.18 : 19,580.96 = 8,220.72 : x
  2. Step 2: Convert to fraction form
    14,189.18/19,580.96 = 8,220.72/x
  3. Step 3: Cross multiply
    14,189.18x = 19,580.96 × 8,220.72
  4. Step 4: Simplify right side
    14,189.18x = 160,969,589.49
  5. Step 5: Solve for x
    x = 160,969,589.49/14,189.18
  6. Step 6: Final answer
    x = 11,344.53

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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.