Home / 20,977.08-31,465.64-5,394.72

Finding the Fourth Proportional to 20,977.08, 31,465.64 and 5,394.72

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Solution

The fourth proportional to 20,977.08, 31,465.64 and 5,394.72 is: 8,092.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.08 : 31,465.64 = 5,394.72 : x
  2. Step 2: Convert to fraction form
    20,977.08/31,465.64 = 5,394.72/x
  3. Step 3: Cross multiply
    20,977.08x = 31,465.64 × 5,394.72
  4. Step 4: Simplify right side
    20,977.08x = 169,748,317.42
  5. Step 5: Solve for x
    x = 169,748,317.42/20,977.08
  6. Step 6: Final answer
    x = 8,092.09

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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.