Home / 20,717.09-31,102.73-12,298.96

Finding the Fourth Proportional to 20,717.09, 31,102.73 and 12,298.96

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Solution

The fourth proportional to 20,717.09, 31,102.73 and 12,298.96 is: 18,464.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.09 : 31,102.73 = 12,298.96 : x
  2. Step 2: Convert to fraction form
    20,717.09/31,102.73 = 12,298.96/x
  3. Step 3: Cross multiply
    20,717.09x = 31,102.73 × 12,298.96
  4. Step 4: Simplify right side
    20,717.09x = 382,531,232.16
  5. Step 5: Solve for x
    x = 382,531,232.16/20,717.09
  6. Step 6: Final answer
    x = 18,464.53

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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.