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Finding the Fourth Proportional to 15,053.41, 20,769.46 and 8,679.50

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Solution

The fourth proportional to 15,053.41, 20,769.46 and 8,679.50 is: 11,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.41 : 20,769.46 = 8,679.50 : x
  2. Step 2: Convert to fraction form
    15,053.41/20,769.46 = 8,679.50/x
  3. Step 3: Cross multiply
    15,053.41x = 20,769.46 × 8,679.50
  4. Step 4: Simplify right side
    15,053.41x = 180,268,476.15
  5. Step 5: Solve for x
    x = 180,268,476.15/15,053.41
  6. Step 6: Final answer
    x = 11,975.26

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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.