Home / 13,834.13-20,731.25-7,892.70

Finding the Fourth Proportional to 13,834.13, 20,731.25 and 7,892.70

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Solution

The fourth proportional to 13,834.13, 20,731.25 and 7,892.70 is: 11,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,834.13 : 20,731.25 = 7,892.70 : x
  2. Step 2: Convert to fraction form
    13,834.13/20,731.25 = 7,892.70/x
  3. Step 3: Cross multiply
    13,834.13x = 20,731.25 × 7,892.70
  4. Step 4: Simplify right side
    13,834.13x = 163,625,497.41
  5. Step 5: Solve for x
    x = 163,625,497.41/13,834.13
  6. Step 6: Final answer
    x = 11,827.67

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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.