Home / 20,717.96-31,104.05-12,299.84

Finding the Fourth Proportional to 20,717.96, 31,104.05 and 12,299.84

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Solution

The fourth proportional to 20,717.96, 31,104.05 and 12,299.84 is: 18,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.96 : 31,104.05 = 12,299.84 : x
  2. Step 2: Convert to fraction form
    20,717.96/31,104.05 = 12,299.84/x
  3. Step 3: Cross multiply
    20,717.96x = 31,104.05 × 12,299.84
  4. Step 4: Simplify right side
    20,717.96x = 382,574,621.33
  5. Step 5: Solve for x
    x = 382,574,621.33/20,717.96
  6. Step 6: Final answer
    x = 18,465.84

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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.