Home / 13,606.08-20,412.36-5,815.50

Finding the Fourth Proportional to 13,606.08, 20,412.36 and 5,815.50

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Solution

The fourth proportional to 13,606.08, 20,412.36 and 5,815.50 is: 8,724.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.08 : 20,412.36 = 5,815.50 : x
  2. Step 2: Convert to fraction form
    13,606.08/20,412.36 = 5,815.50/x
  3. Step 3: Cross multiply
    13,606.08x = 20,412.36 × 5,815.50
  4. Step 4: Simplify right side
    13,606.08x = 118,708,079.58
  5. Step 5: Solve for x
    x = 118,708,079.58/13,606.08
  6. Step 6: Final answer
    x = 8,724.63

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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.