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Finding the Fourth Proportional to 19,221.48, 28,842.48 and 7,534.80

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Solution

The fourth proportional to 19,221.48, 28,842.48 and 7,534.80 is: 11,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.48 : 28,842.48 = 7,534.80 : x
  2. Step 2: Convert to fraction form
    19,221.48/28,842.48 = 7,534.80/x
  3. Step 3: Cross multiply
    19,221.48x = 28,842.48 × 7,534.80
  4. Step 4: Simplify right side
    19,221.48x = 217,322,318.30
  5. Step 5: Solve for x
    x = 217,322,318.30/19,221.48
  6. Step 6: Final answer
    x = 11,306.22

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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.