Home / 20,736.36-31,107.96-7,607.16

Finding the Fourth Proportional to 20,736.36, 31,107.96 and 7,607.16

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Solution

The fourth proportional to 20,736.36, 31,107.96 and 7,607.16 is: 11,411.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.36 : 31,107.96 = 7,607.16 : x
  2. Step 2: Convert to fraction form
    20,736.36/31,107.96 = 7,607.16/x
  3. Step 3: Cross multiply
    20,736.36x = 31,107.96 × 7,607.16
  4. Step 4: Simplify right side
    20,736.36x = 236,643,228.99
  5. Step 5: Solve for x
    x = 236,643,228.99/20,736.36
  6. Step 6: Final answer
    x = 11,411.99

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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.