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Finding the Fourth Proportional to 14,420.14, 21,621.84 and 7,015.26

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Solution

The fourth proportional to 14,420.14, 21,621.84 and 7,015.26 is: 10,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.14 : 21,621.84 = 7,015.26 : x
  2. Step 2: Convert to fraction form
    14,420.14/21,621.84 = 7,015.26/x
  3. Step 3: Cross multiply
    14,420.14x = 21,621.84 × 7,015.26
  4. Step 4: Simplify right side
    14,420.14x = 151,682,829.28
  5. Step 5: Solve for x
    x = 151,682,829.28/14,420.14
  6. Step 6: Final answer
    x = 10,518.82

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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.