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Finding the Fourth Proportional to 19,020.56, 28,536.98 and 9,160.56

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Solution

The fourth proportional to 19,020.56, 28,536.98 and 9,160.56 is: 13,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.56 : 28,536.98 = 9,160.56 : x
  2. Step 2: Convert to fraction form
    19,020.56/28,536.98 = 9,160.56/x
  3. Step 3: Cross multiply
    19,020.56x = 28,536.98 × 9,160.56
  4. Step 4: Simplify right side
    19,020.56x = 261,414,671.71
  5. Step 5: Solve for x
    x = 261,414,671.71/19,020.56
  6. Step 6: Final answer
    x = 13,743.80

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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.