Home / 20,220.08-30,347.16-8,541.68

Finding the Fourth Proportional to 20,220.08, 30,347.16 and 8,541.68

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Solution

The fourth proportional to 20,220.08, 30,347.16 and 8,541.68 is: 12,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.08 : 30,347.16 = 8,541.68 : x
  2. Step 2: Convert to fraction form
    20,220.08/30,347.16 = 8,541.68/x
  3. Step 3: Cross multiply
    20,220.08x = 30,347.16 × 8,541.68
  4. Step 4: Simplify right side
    20,220.08x = 259,215,729.63
  5. Step 5: Solve for x
    x = 259,215,729.63/20,220.08
  6. Step 6: Final answer
    x = 12,819.72

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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.