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Finding the Fourth Proportional to 19,194.50, 28,769.92 and 11,681.50

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Solution

The fourth proportional to 19,194.50, 28,769.92 and 11,681.50 is: 17,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,194.50 : 28,769.92 = 11,681.50 : x
  2. Step 2: Convert to fraction form
    19,194.50/28,769.92 = 11,681.50/x
  3. Step 3: Cross multiply
    19,194.50x = 28,769.92 × 11,681.50
  4. Step 4: Simplify right side
    19,194.50x = 336,075,820.48
  5. Step 5: Solve for x
    x = 336,075,820.48/19,194.50
  6. Step 6: Final answer
    x = 17,508.96

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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.