Home / 14,052.69-21,172.79-12,720.14

Finding the Fourth Proportional to 14,052.69, 21,172.79 and 12,720.14

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Solution

The fourth proportional to 14,052.69, 21,172.79 and 12,720.14 is: 19,165.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,052.69 : 21,172.79 = 12,720.14 : x
  2. Step 2: Convert to fraction form
    14,052.69/21,172.79 = 12,720.14/x
  3. Step 3: Cross multiply
    14,052.69x = 21,172.79 × 12,720.14
  4. Step 4: Simplify right side
    14,052.69x = 269,320,858.32
  5. Step 5: Solve for x
    x = 269,320,858.32/14,052.69
  6. Step 6: Final answer
    x = 19,165.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.