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Finding the Fourth Proportional to 18,677.99, 28,027.52 and 10,356.96

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Solution

The fourth proportional to 18,677.99, 28,027.52 and 10,356.96 is: 15,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.99 : 28,027.52 = 10,356.96 : x
  2. Step 2: Convert to fraction form
    18,677.99/28,027.52 = 10,356.96/x
  3. Step 3: Cross multiply
    18,677.99x = 28,027.52 × 10,356.96
  4. Step 4: Simplify right side
    18,677.99x = 290,279,995.70
  5. Step 5: Solve for x
    x = 290,279,995.70/18,677.99
  6. Step 6: Final answer
    x = 15,541.28

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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.