Home / 12,463.64-18,688.46-4,139.20

Finding the Fourth Proportional to 12,463.64, 18,688.46 and 4,139.20

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Solution

The fourth proportional to 12,463.64, 18,688.46 and 4,139.20 is: 6,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,463.64 : 18,688.46 = 4,139.20 : x
  2. Step 2: Convert to fraction form
    12,463.64/18,688.46 = 4,139.20/x
  3. Step 3: Cross multiply
    12,463.64x = 18,688.46 × 4,139.20
  4. Step 4: Simplify right side
    12,463.64x = 77,355,252.94
  5. Step 5: Solve for x
    x = 77,355,252.94/12,463.64
  6. Step 6: Final answer
    x = 6,206.47

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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.