Home / 14,099.99-21,105.35-9,920.63

Finding the Fourth Proportional to 14,099.99, 21,105.35 and 9,920.63

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Solution

The fourth proportional to 14,099.99, 21,105.35 and 9,920.63 is: 14,849.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,099.99 : 21,105.35 = 9,920.63 : x
  2. Step 2: Convert to fraction form
    14,099.99/21,105.35 = 9,920.63/x
  3. Step 3: Cross multiply
    14,099.99x = 21,105.35 × 9,920.63
  4. Step 4: Simplify right side
    14,099.99x = 209,378,318.77
  5. Step 5: Solve for x
    x = 209,378,318.77/14,099.99
  6. Step 6: Final answer
    x = 14,849.54

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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.