Home / 10,889.40-16,336.14-3,870.36

Finding the Fourth Proportional to 10,889.40, 16,336.14 and 3,870.36

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Solution

The fourth proportional to 10,889.40, 16,336.14 and 3,870.36 is: 5,806.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.40 : 16,336.14 = 3,870.36 : x
  2. Step 2: Convert to fraction form
    10,889.40/16,336.14 = 3,870.36/x
  3. Step 3: Cross multiply
    10,889.40x = 16,336.14 × 3,870.36
  4. Step 4: Simplify right side
    10,889.40x = 63,226,742.81
  5. Step 5: Solve for x
    x = 63,226,742.81/10,889.40
  6. Step 6: Final answer
    x = 5,806.27

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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.