Home / 38,031.20-57,054.36-19,321.76

Finding the Fourth Proportional to 38,031.20, 57,054.36 and 19,321.76

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Solution

The fourth proportional to 38,031.20, 57,054.36 and 19,321.76 is: 28,986.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,031.20 : 57,054.36 = 19,321.76 : x
  2. Step 2: Convert to fraction form
    38,031.20/57,054.36 = 19,321.76/x
  3. Step 3: Cross multiply
    38,031.20x = 57,054.36 × 19,321.76
  4. Step 4: Simplify right side
    38,031.20x = 1,102,390,650.87
  5. Step 5: Solve for x
    x = 1,102,390,650.87/38,031.20
  6. Step 6: Final answer
    x = 28,986.48

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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.