Home / 20,690.19-31,043.59-9,450.86

Finding the Fourth Proportional to 20,690.19, 31,043.59 and 9,450.86

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Solution

The fourth proportional to 20,690.19, 31,043.59 and 9,450.86 is: 14,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.19 : 31,043.59 = 9,450.86 : x
  2. Step 2: Convert to fraction form
    20,690.19/31,043.59 = 9,450.86/x
  3. Step 3: Cross multiply
    20,690.19x = 31,043.59 × 9,450.86
  4. Step 4: Simplify right side
    20,690.19x = 293,388,444.14
  5. Step 5: Solve for x
    x = 293,388,444.14/20,690.19
  6. Step 6: Final answer
    x = 14,180.07

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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.