Home / 12,816.27-19,225.22-5,419.76

Finding the Fourth Proportional to 12,816.27, 19,225.22 and 5,419.76

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Solution

The fourth proportional to 12,816.27, 19,225.22 and 5,419.76 is: 8,129.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.27 : 19,225.22 = 5,419.76 : x
  2. Step 2: Convert to fraction form
    12,816.27/19,225.22 = 5,419.76/x
  3. Step 3: Cross multiply
    12,816.27x = 19,225.22 × 5,419.76
  4. Step 4: Simplify right side
    12,816.27x = 104,195,955.12
  5. Step 5: Solve for x
    x = 104,195,955.12/12,816.27
  6. Step 6: Final answer
    x = 8,129.98

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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.