Home / 12,721.05-19,081.64-5,224.60

Finding the Fourth Proportional to 12,721.05, 19,081.64 and 5,224.60

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Solution

The fourth proportional to 12,721.05, 19,081.64 and 5,224.60 is: 7,836.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.05 : 19,081.64 = 5,224.60 : x
  2. Step 2: Convert to fraction form
    12,721.05/19,081.64 = 5,224.60/x
  3. Step 3: Cross multiply
    12,721.05x = 19,081.64 × 5,224.60
  4. Step 4: Simplify right side
    12,721.05x = 99,693,973.26
  5. Step 5: Solve for x
    x = 99,693,973.26/12,721.05
  6. Step 6: Final answer
    x = 7,836.93

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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.