Home / 20,690.87-31,054.32-10,837.08

Finding the Fourth Proportional to 20,690.87, 31,054.32 and 10,837.08

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Solution

The fourth proportional to 20,690.87, 31,054.32 and 10,837.08 is: 16,265.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.87 : 31,054.32 = 10,837.08 : x
  2. Step 2: Convert to fraction form
    20,690.87/31,054.32 = 10,837.08/x
  3. Step 3: Cross multiply
    20,690.87x = 31,054.32 × 10,837.08
  4. Step 4: Simplify right side
    20,690.87x = 336,538,150.19
  5. Step 5: Solve for x
    x = 336,538,150.19/20,690.87
  6. Step 6: Final answer
    x = 16,265.06

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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.