Home / 20,701.98-31,044.45-8,220.30

Finding the Fourth Proportional to 20,701.98, 31,044.45 and 8,220.30

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Solution

The fourth proportional to 20,701.98, 31,044.45 and 8,220.30 is: 12,327.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.98 : 31,044.45 = 8,220.30 : x
  2. Step 2: Convert to fraction form
    20,701.98/31,044.45 = 8,220.30/x
  3. Step 3: Cross multiply
    20,701.98x = 31,044.45 × 8,220.30
  4. Step 4: Simplify right side
    20,701.98x = 255,194,692.34
  5. Step 5: Solve for x
    x = 255,194,692.34/20,701.98
  6. Step 6: Final answer
    x = 12,327.07

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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.