Home / 14,142.36-21,216.94-9,990.44

Finding the Fourth Proportional to 14,142.36, 21,216.94 and 9,990.44

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Solution

The fourth proportional to 14,142.36, 21,216.94 and 9,990.44 is: 14,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.36 : 21,216.94 = 9,990.44 : x
  2. Step 2: Convert to fraction form
    14,142.36/21,216.94 = 9,990.44/x
  3. Step 3: Cross multiply
    14,142.36x = 21,216.94 × 9,990.44
  4. Step 4: Simplify right side
    14,142.36x = 211,966,566.05
  5. Step 5: Solve for x
    x = 211,966,566.05/14,142.36
  6. Step 6: Final answer
    x = 14,988.06

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1.5x scale

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.