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Finding the Fourth Proportional to 14,362.92, 19,818.78 and 7,989.12

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Solution

The fourth proportional to 14,362.92, 19,818.78 and 7,989.12 is: 11,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,362.92 : 19,818.78 = 7,989.12 : x
  2. Step 2: Convert to fraction form
    14,362.92/19,818.78 = 7,989.12/x
  3. Step 3: Cross multiply
    14,362.92x = 19,818.78 × 7,989.12
  4. Step 4: Simplify right side
    14,362.92x = 158,334,611.67
  5. Step 5: Solve for x
    x = 158,334,611.67/14,362.92
  6. Step 6: Final answer
    x = 11,023.85

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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.