Home / 13,429.09-18,539.86-8,967.61

Finding the Fourth Proportional to 13,429.09, 18,539.86 and 8,967.61

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Solution

The fourth proportional to 13,429.09, 18,539.86 and 8,967.61 is: 12,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.09 : 18,539.86 = 8,967.61 : x
  2. Step 2: Convert to fraction form
    13,429.09/18,539.86 = 8,967.61/x
  3. Step 3: Cross multiply
    13,429.09x = 18,539.86 × 8,967.61
  4. Step 4: Simplify right side
    13,429.09x = 166,258,233.93
  5. Step 5: Solve for x
    x = 166,258,233.93/13,429.09
  6. Step 6: Final answer
    x = 12,380.45

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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.