Home / 20,808.10-31,194.60-9,708.94

Finding the Fourth Proportional to 20,808.10, 31,194.60 and 9,708.94

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Solution

The fourth proportional to 20,808.10, 31,194.60 and 9,708.94 is: 14,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.10 : 31,194.60 = 9,708.94 : x
  2. Step 2: Convert to fraction form
    20,808.10/31,194.60 = 9,708.94/x
  3. Step 3: Cross multiply
    20,808.10x = 31,194.60 × 9,708.94
  4. Step 4: Simplify right side
    20,808.10x = 302,866,499.72
  5. Step 5: Solve for x
    x = 302,866,499.72/20,808.10
  6. Step 6: Final answer
    x = 14,555.22

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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.