Home / 19,131.30-28,700.90-8,031.47

Finding the Fourth Proportional to 19,131.30, 28,700.90 and 8,031.47

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Solution

The fourth proportional to 19,131.30, 28,700.90 and 8,031.47 is: 12,048.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.30 : 28,700.90 = 8,031.47 : x
  2. Step 2: Convert to fraction form
    19,131.30/28,700.90 = 8,031.47/x
  3. Step 3: Cross multiply
    19,131.30x = 28,700.90 × 8,031.47
  4. Step 4: Simplify right side
    19,131.30x = 230,510,233.66
  5. Step 5: Solve for x
    x = 230,510,233.66/19,131.30
  6. Step 6: Final answer
    x = 12,048.85

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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.