Home / 20,722.46-31,085.88-8,877.44

Finding the Fourth Proportional to 20,722.46, 31,085.88 and 8,877.44

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Solution

The fourth proportional to 20,722.46, 31,085.88 and 8,877.44 is: 13,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.46 : 31,085.88 = 8,877.44 : x
  2. Step 2: Convert to fraction form
    20,722.46/31,085.88 = 8,877.44/x
  3. Step 3: Cross multiply
    20,722.46x = 31,085.88 × 8,877.44
  4. Step 4: Simplify right side
    20,722.46x = 275,963,034.55
  5. Step 5: Solve for x
    x = 275,963,034.55/20,722.46
  6. Step 6: Final answer
    x = 13,317.10

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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.