Home / 14,270.81-19,695.20-8,221.26

Finding the Fourth Proportional to 14,270.81, 19,695.20 and 8,221.26

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Solution

The fourth proportional to 14,270.81, 19,695.20 and 8,221.26 is: 11,346.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,270.81 : 19,695.20 = 8,221.26 : x
  2. Step 2: Convert to fraction form
    14,270.81/19,695.20 = 8,221.26/x
  3. Step 3: Cross multiply
    14,270.81x = 19,695.20 × 8,221.26
  4. Step 4: Simplify right side
    14,270.81x = 161,919,359.95
  5. Step 5: Solve for x
    x = 161,919,359.95/14,270.81
  6. Step 6: Final answer
    x = 11,346.19

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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.