Home / 12,865.68-19,298.34-3,631.68

Finding the Fourth Proportional to 12,865.68, 19,298.34 and 3,631.68

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Solution

The fourth proportional to 12,865.68, 19,298.34 and 3,631.68 is: 5,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.68 : 19,298.34 = 3,631.68 : x
  2. Step 2: Convert to fraction form
    12,865.68/19,298.34 = 3,631.68/x
  3. Step 3: Cross multiply
    12,865.68x = 19,298.34 × 3,631.68
  4. Step 4: Simplify right side
    12,865.68x = 70,085,395.41
  5. Step 5: Solve for x
    x = 70,085,395.41/12,865.68
  6. Step 6: Final answer
    x = 5,447.47

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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.