Home / 12,820.11-19,232.28-3,935.22

Finding the Fourth Proportional to 12,820.11, 19,232.28 and 3,935.22

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Solution

The fourth proportional to 12,820.11, 19,232.28 and 3,935.22 is: 5,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.11 : 19,232.28 = 3,935.22 : x
  2. Step 2: Convert to fraction form
    12,820.11/19,232.28 = 3,935.22/x
  3. Step 3: Cross multiply
    12,820.11x = 19,232.28 × 3,935.22
  4. Step 4: Simplify right side
    12,820.11x = 75,683,252.90
  5. Step 5: Solve for x
    x = 75,683,252.90/12,820.11
  6. Step 6: Final answer
    x = 5,903.48

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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.