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Finding the Fourth Proportional to 15,027.82, 20,738.27 and 8,980.81

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Solution

The fourth proportional to 15,027.82, 20,738.27 and 8,980.81 is: 12,393.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.82 : 20,738.27 = 8,980.81 : x
  2. Step 2: Convert to fraction form
    15,027.82/20,738.27 = 8,980.81/x
  3. Step 3: Cross multiply
    15,027.82x = 20,738.27 × 8,980.81
  4. Step 4: Simplify right side
    15,027.82x = 186,246,499.34
  5. Step 5: Solve for x
    x = 186,246,499.34/15,027.82
  6. Step 6: Final answer
    x = 12,393.45

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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.