Home / 12,664.18-18,990.74-4,867.50

Finding the Fourth Proportional to 12,664.18, 18,990.74 and 4,867.50

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Solution

The fourth proportional to 12,664.18, 18,990.74 and 4,867.50 is: 7,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.18 : 18,990.74 = 4,867.50 : x
  2. Step 2: Convert to fraction form
    12,664.18/18,990.74 = 4,867.50/x
  3. Step 3: Cross multiply
    12,664.18x = 18,990.74 × 4,867.50
  4. Step 4: Simplify right side
    12,664.18x = 92,437,426.95
  5. Step 5: Solve for x
    x = 92,437,426.95/12,664.18
  6. Step 6: Final answer
    x = 7,299.12

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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.