Home / 20,983.98-31,466.55-6,187.71

Finding the Fourth Proportional to 20,983.98, 31,466.55 and 6,187.71

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Solution

The fourth proportional to 20,983.98, 31,466.55 and 6,187.71 is: 9,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.98 : 31,466.55 = 6,187.71 : x
  2. Step 2: Convert to fraction form
    20,983.98/31,466.55 = 6,187.71/x
  3. Step 3: Cross multiply
    20,983.98x = 31,466.55 × 6,187.71
  4. Step 4: Simplify right side
    20,983.98x = 194,705,886.10
  5. Step 5: Solve for x
    x = 194,705,886.10/20,983.98
  6. Step 6: Final answer
    x = 9,278.79

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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.