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Finding the Fourth Proportional to 15,194.88, 20,980.80 and 11,652.48

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Solution

The fourth proportional to 15,194.88, 20,980.80 and 11,652.48 is: 16,089.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.88 : 20,980.80 = 11,652.48 : x
  2. Step 2: Convert to fraction form
    15,194.88/20,980.80 = 11,652.48/x
  3. Step 3: Cross multiply
    15,194.88x = 20,980.80 × 11,652.48
  4. Step 4: Simplify right side
    15,194.88x = 244,478,352.38
  5. Step 5: Solve for x
    x = 244,478,352.38/15,194.88
  6. Step 6: Final answer
    x = 16,089.52

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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.