Home / 38,813.46-58,220.20-12,518.21

Finding the Fourth Proportional to 38,813.46, 58,220.20 and 12,518.21

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Solution

The fourth proportional to 38,813.46, 58,220.20 and 12,518.21 is: 18,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,813.46 : 58,220.20 = 12,518.21 : x
  2. Step 2: Convert to fraction form
    38,813.46/58,220.20 = 12,518.21/x
  3. Step 3: Cross multiply
    38,813.46x = 58,220.20 × 12,518.21
  4. Step 4: Simplify right side
    38,813.46x = 728,812,851.04
  5. Step 5: Solve for x
    x = 728,812,851.04/38,813.46
  6. Step 6: Final answer
    x = 18,777.32

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Half scale
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Double scale
Find fourth proportional to 38,814.46, 58,221.70 and 12,519.21
Similar ratio
Find fourth proportional to 58,220.19, 87,330.30 and 18,777.32
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.