Home / 13,929.45-20,900.99-6,910.12

Finding the Fourth Proportional to 13,929.45, 20,900.99 and 6,910.12

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Solution

The fourth proportional to 13,929.45, 20,900.99 and 6,910.12 is: 10,368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.45 : 20,900.99 = 6,910.12 : x
  2. Step 2: Convert to fraction form
    13,929.45/20,900.99 = 6,910.12/x
  3. Step 3: Cross multiply
    13,929.45x = 20,900.99 × 6,910.12
  4. Step 4: Simplify right side
    13,929.45x = 144,428,349.02
  5. Step 5: Solve for x
    x = 144,428,349.02/13,929.45
  6. Step 6: Final answer
    x = 10,368.56

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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.