Home / 20,977.01-31,464.75-9,895.91

Finding the Fourth Proportional to 20,977.01, 31,464.75 and 9,895.91

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Solution

The fourth proportional to 20,977.01, 31,464.75 and 9,895.91 is: 14,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.01 : 31,464.75 = 9,895.91 : x
  2. Step 2: Convert to fraction form
    20,977.01/31,464.75 = 9,895.91/x
  3. Step 3: Cross multiply
    20,977.01x = 31,464.75 × 9,895.91
  4. Step 4: Simplify right side
    20,977.01x = 311,372,213.96
  5. Step 5: Solve for x
    x = 311,372,213.96/20,977.01
  6. Step 6: Final answer
    x = 14,843.50

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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.