Home / 12,635.71-18,953.63-3,870.61

Finding the Fourth Proportional to 12,635.71, 18,953.63 and 3,870.61

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Solution

The fourth proportional to 12,635.71, 18,953.63 and 3,870.61 is: 5,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.71 : 18,953.63 = 3,870.61 : x
  2. Step 2: Convert to fraction form
    12,635.71/18,953.63 = 3,870.61/x
  3. Step 3: Cross multiply
    12,635.71x = 18,953.63 × 3,870.61
  4. Step 4: Simplify right side
    12,635.71x = 73,362,109.81
  5. Step 5: Solve for x
    x = 73,362,109.81/12,635.71
  6. Step 6: Final answer
    x = 5,805.93

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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.