Home / 19,977.20-29,976.60-8,885.60

Finding the Fourth Proportional to 19,977.20, 29,976.60 and 8,885.60

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Solution

The fourth proportional to 19,977.20, 29,976.60 and 8,885.60 is: 13,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.20 : 29,976.60 = 8,885.60 : x
  2. Step 2: Convert to fraction form
    19,977.20/29,976.60 = 8,885.60/x
  3. Step 3: Cross multiply
    19,977.20x = 29,976.60 × 8,885.60
  4. Step 4: Simplify right side
    19,977.20x = 266,360,076.96
  5. Step 5: Solve for x
    x = 266,360,076.96/19,977.20
  6. Step 6: Final answer
    x = 13,333.20

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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.