Home / 20,087.80-30,126.30-8,398.60

Finding the Fourth Proportional to 20,087.80, 30,126.30 and 8,398.60

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Solution

The fourth proportional to 20,087.80, 30,126.30 and 8,398.60 is: 12,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.80 : 30,126.30 = 8,398.60 : x
  2. Step 2: Convert to fraction form
    20,087.80/30,126.30 = 8,398.60/x
  3. Step 3: Cross multiply
    20,087.80x = 30,126.30 × 8,398.60
  4. Step 4: Simplify right side
    20,087.80x = 253,018,743.18
  5. Step 5: Solve for x
    x = 253,018,743.18/20,087.80
  6. Step 6: Final answer
    x = 12,595.64

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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.