Home / 18,021.20-27,031.80-6,335.60

Finding the Fourth Proportional to 18,021.20, 27,031.80 and 6,335.60

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Solution

The fourth proportional to 18,021.20, 27,031.80 and 6,335.60 is: 9,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,021.20 : 27,031.80 = 6,335.60 : x
  2. Step 2: Convert to fraction form
    18,021.20/27,031.80 = 6,335.60/x
  3. Step 3: Cross multiply
    18,021.20x = 27,031.80 × 6,335.60
  4. Step 4: Simplify right side
    18,021.20x = 171,262,672.08
  5. Step 5: Solve for x
    x = 171,262,672.08/18,021.20
  6. Step 6: Final answer
    x = 9,503.40

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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.