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Finding the Fourth Proportional to 14,981.09, 20,672.69 and 8,605.67

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Solution

The fourth proportional to 14,981.09, 20,672.69 and 8,605.67 is: 11,875.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.09 : 20,672.69 = 8,605.67 : x
  2. Step 2: Convert to fraction form
    14,981.09/20,672.69 = 8,605.67/x
  3. Step 3: Cross multiply
    14,981.09x = 20,672.69 × 8,605.67
  4. Step 4: Simplify right side
    14,981.09x = 177,902,201.76
  5. Step 5: Solve for x
    x = 177,902,201.76/14,981.09
  6. Step 6: Final answer
    x = 11,875.12

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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.