Home / 20,977.35-31,466.44-7,827.10

Finding the Fourth Proportional to 20,977.35, 31,466.44 and 7,827.10

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Solution

The fourth proportional to 20,977.35, 31,466.44 and 7,827.10 is: 11,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.35 : 31,466.44 = 7,827.10 : x
  2. Step 2: Convert to fraction form
    20,977.35/31,466.44 = 7,827.10/x
  3. Step 3: Cross multiply
    20,977.35x = 31,466.44 × 7,827.10
  4. Step 4: Simplify right side
    20,977.35x = 246,290,903.64
  5. Step 5: Solve for x
    x = 246,290,903.64/20,977.35
  6. Step 6: Final answer
    x = 11,740.80

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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.