Home / 20,806.10-31,191.60-9,706.94

Finding the Fourth Proportional to 20,806.10, 31,191.60 and 9,706.94

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Solution

The fourth proportional to 20,806.10, 31,191.60 and 9,706.94 is: 14,552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.10 : 31,191.60 = 9,706.94 : x
  2. Step 2: Convert to fraction form
    20,806.10/31,191.60 = 9,706.94/x
  3. Step 3: Cross multiply
    20,806.10x = 31,191.60 × 9,706.94
  4. Step 4: Simplify right side
    20,806.10x = 302,774,989.70
  5. Step 5: Solve for x
    x = 302,774,989.70/20,806.10
  6. Step 6: Final answer
    x = 14,552.22

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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.