Home / 13,919.91-20,869.12-9,465.99

Finding the Fourth Proportional to 13,919.91, 20,869.12 and 9,465.99

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Solution

The fourth proportional to 13,919.91, 20,869.12 and 9,465.99 is: 14,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.91 : 20,869.12 = 9,465.99 : x
  2. Step 2: Convert to fraction form
    13,919.91/20,869.12 = 9,465.99/x
  3. Step 3: Cross multiply
    13,919.91x = 20,869.12 × 9,465.99
  4. Step 4: Simplify right side
    13,919.91x = 197,546,881.23
  5. Step 5: Solve for x
    x = 197,546,881.23/13,919.91
  6. Step 6: Final answer
    x = 14,191.68

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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.