Home / 20,977.58-31,465.65-6,185.90

Finding the Fourth Proportional to 20,977.58, 31,465.65 and 6,185.90

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Solution

The fourth proportional to 20,977.58, 31,465.65 and 6,185.90 is: 9,278.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.58 : 31,465.65 = 6,185.90 : x
  2. Step 2: Convert to fraction form
    20,977.58/31,465.65 = 6,185.90/x
  3. Step 3: Cross multiply
    20,977.58x = 31,465.65 × 6,185.90
  4. Step 4: Simplify right side
    20,977.58x = 194,643,364.34
  5. Step 5: Solve for x
    x = 194,643,364.34/20,977.58
  6. Step 6: Final answer
    x = 9,278.64

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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.