Home / 13,386.60-20,081.88-4,619.16

Finding the Fourth Proportional to 13,386.60, 20,081.88 and 4,619.16

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Solution

The fourth proportional to 13,386.60, 20,081.88 and 4,619.16 is: 6,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.60 : 20,081.88 = 4,619.16 : x
  2. Step 2: Convert to fraction form
    13,386.60/20,081.88 = 4,619.16/x
  3. Step 3: Cross multiply
    13,386.60x = 20,081.88 × 4,619.16
  4. Step 4: Simplify right side
    13,386.60x = 92,761,416.82
  5. Step 5: Solve for x
    x = 92,761,416.82/13,386.60
  6. Step 6: Final answer
    x = 6,929.42

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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.