Home / 38,128.32-57,196.80-18,403.20

Finding the Fourth Proportional to 38,128.32, 57,196.80 and 18,403.20

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Solution

The fourth proportional to 38,128.32, 57,196.80 and 18,403.20 is: 27,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.32 : 57,196.80 = 18,403.20 : x
  2. Step 2: Convert to fraction form
    38,128.32/57,196.80 = 18,403.20/x
  3. Step 3: Cross multiply
    38,128.32x = 57,196.80 × 18,403.20
  4. Step 4: Simplify right side
    38,128.32x = 1,052,604,149.76
  5. Step 5: Solve for x
    x = 1,052,604,149.76/38,128.32
  6. Step 6: Final answer
    x = 27,606.89

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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.