Home / 12,126.91-18,172.13-6,856.24

Finding the Fourth Proportional to 12,126.91, 18,172.13 and 6,856.24

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Solution

The fourth proportional to 12,126.91, 18,172.13 and 6,856.24 is: 10,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.91 : 18,172.13 = 6,856.24 : x
  2. Step 2: Convert to fraction form
    12,126.91/18,172.13 = 6,856.24/x
  3. Step 3: Cross multiply
    12,126.91x = 18,172.13 × 6,856.24
  4. Step 4: Simplify right side
    12,126.91x = 124,592,484.59
  5. Step 5: Solve for x
    x = 124,592,484.59/12,126.91
  6. Step 6: Final answer
    x = 10,274.05

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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.