Home / 13,292.12-18,342.18-7,989.86

Finding the Fourth Proportional to 13,292.12, 18,342.18 and 7,989.86

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Solution

The fourth proportional to 13,292.12, 18,342.18 and 7,989.86 is: 11,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.12 : 18,342.18 = 7,989.86 : x
  2. Step 2: Convert to fraction form
    13,292.12/18,342.18 = 7,989.86/x
  3. Step 3: Cross multiply
    13,292.12x = 18,342.18 × 7,989.86
  4. Step 4: Simplify right side
    13,292.12x = 146,551,450.29
  5. Step 5: Solve for x
    x = 146,551,450.29/13,292.12
  6. Step 6: Final answer
    x = 11,025.44

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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.