Home / 20,977.83-31,477.46-11,616.08

Finding the Fourth Proportional to 20,977.83, 31,477.46 and 11,616.08

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Solution

The fourth proportional to 20,977.83, 31,477.46 and 11,616.08 is: 17,430.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.83 : 31,477.46 = 11,616.08 : x
  2. Step 2: Convert to fraction form
    20,977.83/31,477.46 = 11,616.08/x
  3. Step 3: Cross multiply
    20,977.83x = 31,477.46 × 11,616.08
  4. Step 4: Simplify right side
    20,977.83x = 365,644,478.09
  5. Step 5: Solve for x
    x = 365,644,478.09/20,977.83
  6. Step 6: Final answer
    x = 17,430.04

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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.