Home / 20,744.40-31,104.08-8,266.35

Finding the Fourth Proportional to 20,744.40, 31,104.08 and 8,266.35

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Solution

The fourth proportional to 20,744.40, 31,104.08 and 8,266.35 is: 12,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.40 : 31,104.08 = 8,266.35 : x
  2. Step 2: Convert to fraction form
    20,744.40/31,104.08 = 8,266.35/x
  3. Step 3: Cross multiply
    20,744.40x = 31,104.08 × 8,266.35
  4. Step 4: Simplify right side
    20,744.40x = 257,117,211.71
  5. Step 5: Solve for x
    x = 257,117,211.71/20,744.40
  6. Step 6: Final answer
    x = 12,394.54

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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.