Home / 20,680.98-31,002.93-8,192.58

Finding the Fourth Proportional to 20,680.98, 31,002.93 and 8,192.58

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Solution

The fourth proportional to 20,680.98, 31,002.93 and 8,192.58 is: 12,281.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.98 : 31,002.93 = 8,192.58 : x
  2. Step 2: Convert to fraction form
    20,680.98/31,002.93 = 8,192.58/x
  3. Step 3: Cross multiply
    20,680.98x = 31,002.93 × 8,192.58
  4. Step 4: Simplify right side
    20,680.98x = 253,993,984.26
  5. Step 5: Solve for x
    x = 253,993,984.26/20,680.98
  6. Step 6: Final answer
    x = 12,281.53

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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.