Home / 20,736.87-31,099.80-7,589.34

Finding the Fourth Proportional to 20,736.87, 31,099.80 and 7,589.34

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Solution

The fourth proportional to 20,736.87, 31,099.80 and 7,589.34 is: 11,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.87 : 31,099.80 = 7,589.34 : x
  2. Step 2: Convert to fraction form
    20,736.87/31,099.80 = 7,589.34/x
  3. Step 3: Cross multiply
    20,736.87x = 31,099.80 × 7,589.34
  4. Step 4: Simplify right side
    20,736.87x = 236,026,956.13
  5. Step 5: Solve for x
    x = 236,026,956.13/20,736.87
  6. Step 6: Final answer
    x = 11,382.00

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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.