Home / 14,679.40-21,990.30-8,818.60

Finding the Fourth Proportional to 14,679.40, 21,990.30 and 8,818.60

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Solution

The fourth proportional to 14,679.40, 21,990.30 and 8,818.60 is: 13,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.40 : 21,990.30 = 8,818.60 : x
  2. Step 2: Convert to fraction form
    14,679.40/21,990.30 = 8,818.60/x
  3. Step 3: Cross multiply
    14,679.40x = 21,990.30 × 8,818.60
  4. Step 4: Simplify right side
    14,679.40x = 193,923,659.58
  5. Step 5: Solve for x
    x = 193,923,659.58/14,679.40
  6. Step 6: Final answer
    x = 13,210.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.