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Finding the Fourth Proportional to 14,518.95, 20,035.65 and 8,231.32

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Solution

The fourth proportional to 14,518.95, 20,035.65 and 8,231.32 is: 11,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,518.95 : 20,035.65 = 8,231.32 : x
  2. Step 2: Convert to fraction form
    14,518.95/20,035.65 = 8,231.32/x
  3. Step 3: Cross multiply
    14,518.95x = 20,035.65 × 8,231.32
  4. Step 4: Simplify right side
    14,518.95x = 164,919,902.47
  5. Step 5: Solve for x
    x = 164,919,902.47/14,518.95
  6. Step 6: Final answer
    x = 11,358.94

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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.