Home / 19,125.40-28,699.28-8,031.28

Finding the Fourth Proportional to 19,125.40, 28,699.28 and 8,031.28

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Solution

The fourth proportional to 19,125.40, 28,699.28 and 8,031.28 is: 12,051.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125.40 : 28,699.28 = 8,031.28 : x
  2. Step 2: Convert to fraction form
    19,125.40/28,699.28 = 8,031.28/x
  3. Step 3: Cross multiply
    19,125.40x = 28,699.28 × 8,031.28
  4. Step 4: Simplify right side
    19,125.40x = 230,491,953.48
  5. Step 5: Solve for x
    x = 230,491,953.48/19,125.40
  6. Step 6: Final answer
    x = 12,051.61

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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.