Home / 12,031.86-18,047.52-5,453.28

Finding the Fourth Proportional to 12,031.86, 18,047.52 and 5,453.28

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Solution

The fourth proportional to 12,031.86, 18,047.52 and 5,453.28 is: 8,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,031.86 : 18,047.52 = 5,453.28 : x
  2. Step 2: Convert to fraction form
    12,031.86/18,047.52 = 5,453.28/x
  3. Step 3: Cross multiply
    12,031.86x = 18,047.52 × 5,453.28
  4. Step 4: Simplify right side
    12,031.86x = 98,418,179.87
  5. Step 5: Solve for x
    x = 98,418,179.87/12,031.86
  6. Step 6: Final answer
    x = 8,179.80

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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.