Home / 12,376.28-18,563.90-4,478.98

Finding the Fourth Proportional to 12,376.28, 18,563.90 and 4,478.98

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Solution

The fourth proportional to 12,376.28, 18,563.90 and 4,478.98 is: 6,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.28 : 18,563.90 = 4,478.98 : x
  2. Step 2: Convert to fraction form
    12,376.28/18,563.90 = 4,478.98/x
  3. Step 3: Cross multiply
    12,376.28x = 18,563.90 × 4,478.98
  4. Step 4: Simplify right side
    12,376.28x = 83,147,336.82
  5. Step 5: Solve for x
    x = 83,147,336.82/12,376.28
  6. Step 6: Final answer
    x = 6,718.28

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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.