Home / 14,006.20-21,009.30-12,183.70

Finding the Fourth Proportional to 14,006.20, 21,009.30 and 12,183.70

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Solution

The fourth proportional to 14,006.20, 21,009.30 and 12,183.70 is: 18,275.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.20 : 21,009.30 = 12,183.70 : x
  2. Step 2: Convert to fraction form
    14,006.20/21,009.30 = 12,183.70/x
  3. Step 3: Cross multiply
    14,006.20x = 21,009.30 × 12,183.70
  4. Step 4: Simplify right side
    14,006.20x = 255,971,008.41
  5. Step 5: Solve for x
    x = 255,971,008.41/14,006.20
  6. Step 6: Final answer
    x = 18,275.55

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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.