Home / 14,478.45-21,721.32-4,090.20

Finding the Fourth Proportional to 14,478.45, 21,721.32 and 4,090.20

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Solution

The fourth proportional to 14,478.45, 21,721.32 and 4,090.20 is: 6,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.45 : 21,721.32 = 4,090.20 : x
  2. Step 2: Convert to fraction form
    14,478.45/21,721.32 = 4,090.20/x
  3. Step 3: Cross multiply
    14,478.45x = 21,721.32 × 4,090.20
  4. Step 4: Simplify right side
    14,478.45x = 88,844,543.06
  5. Step 5: Solve for x
    x = 88,844,543.06/14,478.45
  6. Step 6: Final answer
    x = 6,136.33

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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.