Home / 20,146.08-30,211.29-6,815.51

Finding the Fourth Proportional to 20,146.08, 30,211.29 and 6,815.51

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Solution

The fourth proportional to 20,146.08, 30,211.29 and 6,815.51 is: 10,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.08 : 30,211.29 = 6,815.51 : x
  2. Step 2: Convert to fraction form
    20,146.08/30,211.29 = 6,815.51/x
  3. Step 3: Cross multiply
    20,146.08x = 30,211.29 × 6,815.51
  4. Step 4: Simplify right side
    20,146.08x = 205,905,311.34
  5. Step 5: Solve for x
    x = 205,905,311.34/20,146.08
  6. Step 6: Final answer
    x = 10,220.61

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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.