Home / 10,031.47-15,039.88-6,138.61

Finding the Fourth Proportional to 10,031.47, 15,039.88 and 6,138.61

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Solution

The fourth proportional to 10,031.47, 15,039.88 and 6,138.61 is: 9,203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,031.47 : 15,039.88 = 6,138.61 : x
  2. Step 2: Convert to fraction form
    10,031.47/15,039.88 = 6,138.61/x
  3. Step 3: Cross multiply
    10,031.47x = 15,039.88 × 6,138.61
  4. Step 4: Simplify right side
    10,031.47x = 92,323,904.82
  5. Step 5: Solve for x
    x = 92,323,904.82/10,031.47
  6. Step 6: Final answer
    x = 9,203.43

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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.