Home / 14,129.90-21,196.80-4,772.60

Finding the Fourth Proportional to 14,129.90, 21,196.80 and 4,772.60

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Solution

The fourth proportional to 14,129.90, 21,196.80 and 4,772.60 is: 7,159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.90 : 21,196.80 = 4,772.60 : x
  2. Step 2: Convert to fraction form
    14,129.90/21,196.80 = 4,772.60/x
  3. Step 3: Cross multiply
    14,129.90x = 21,196.80 × 4,772.60
  4. Step 4: Simplify right side
    14,129.90x = 101,163,847.68
  5. Step 5: Solve for x
    x = 101,163,847.68/14,129.90
  6. Step 6: Final answer
    x = 7,159.56

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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.