Home / 14,179.91-21,288.69-12,113.19

Finding the Fourth Proportional to 14,179.91, 21,288.69 and 12,113.19

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Solution

The fourth proportional to 14,179.91, 21,288.69 and 12,113.19 is: 18,185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.91 : 21,288.69 = 12,113.19 : x
  2. Step 2: Convert to fraction form
    14,179.91/21,288.69 = 12,113.19/x
  3. Step 3: Cross multiply
    14,179.91x = 21,288.69 × 12,113.19
  4. Step 4: Simplify right side
    14,179.91x = 257,873,946.82
  5. Step 5: Solve for x
    x = 257,873,946.82/14,179.91
  6. Step 6: Final answer
    x = 18,185.87

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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.