Home / 20,899.92-31,343.16-6,856.14

Finding the Fourth Proportional to 20,899.92, 31,343.16 and 6,856.14

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Solution

The fourth proportional to 20,899.92, 31,343.16 and 6,856.14 is: 10,282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.92 : 31,343.16 = 6,856.14 : x
  2. Step 2: Convert to fraction form
    20,899.92/31,343.16 = 6,856.14/x
  3. Step 3: Cross multiply
    20,899.92x = 31,343.16 × 6,856.14
  4. Step 4: Simplify right side
    20,899.92x = 214,893,093.00
  5. Step 5: Solve for x
    x = 214,893,093.00/20,899.92
  6. Step 6: Final answer
    x = 10,282.01

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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.