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Finding the Fourth Proportional to 18,960.80, 26,166 and 10,577.28

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Solution

The fourth proportional to 18,960.80, 26,166 and 10,577.28 is: 14,596.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.80 : 26,166 = 10,577.28 : x
  2. Step 2: Convert to fraction form
    18,960.80/26,166 = 10,577.28/x
  3. Step 3: Cross multiply
    18,960.80x = 26,166 × 10,577.28
  4. Step 4: Simplify right side
    18,960.80x = 276,765,108.48
  5. Step 5: Solve for x
    x = 276,765,108.48/18,960.80
  6. Step 6: Final answer
    x = 14,596.70

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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.