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Finding the Fourth Proportional to 38,357.80, 57,536.70 and 12,070.60

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Solution

The fourth proportional to 38,357.80, 57,536.70 and 12,070.60 is: 18,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,357.80 : 57,536.70 = 12,070.60 : x
  2. Step 2: Convert to fraction form
    38,357.80/57,536.70 = 12,070.60/x
  3. Step 3: Cross multiply
    38,357.80x = 57,536.70 × 12,070.60
  4. Step 4: Simplify right side
    38,357.80x = 694,502,491.02
  5. Step 5: Solve for x
    x = 694,502,491.02/38,357.80
  6. Step 6: Final answer
    x = 18,105.90

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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.