Home / 38,302.20-57,455.10-12,007.80

Finding the Fourth Proportional to 38,302.20, 57,455.10 and 12,007.80

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Solution

The fourth proportional to 38,302.20, 57,455.10 and 12,007.80 is: 18,012.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,302.20 : 57,455.10 = 12,007.80 : x
  2. Step 2: Convert to fraction form
    38,302.20/57,455.10 = 12,007.80/x
  3. Step 3: Cross multiply
    38,302.20x = 57,455.10 × 12,007.80
  4. Step 4: Simplify right side
    38,302.20x = 689,909,349.78
  5. Step 5: Solve for x
    x = 689,909,349.78/38,302.20
  6. Step 6: Final answer
    x = 18,012.26

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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.