Home / 20,712.06-31,068.45-6,861.42

Finding the Fourth Proportional to 20,712.06, 31,068.45 and 6,861.42

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Solution

The fourth proportional to 20,712.06, 31,068.45 and 6,861.42 is: 10,292.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.06 : 31,068.45 = 6,861.42 : x
  2. Step 2: Convert to fraction form
    20,712.06/31,068.45 = 6,861.42/x
  3. Step 3: Cross multiply
    20,712.06x = 31,068.45 × 6,861.42
  4. Step 4: Simplify right side
    20,712.06x = 213,173,684.20
  5. Step 5: Solve for x
    x = 213,173,684.20/20,712.06
  6. Step 6: Final answer
    x = 10,292.25

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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.