Home / 12,946.51-19,428.41-7,107.22

Finding the Fourth Proportional to 12,946.51, 19,428.41 and 7,107.22

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Solution

The fourth proportional to 12,946.51, 19,428.41 and 7,107.22 is: 10,665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,946.51 : 19,428.41 = 7,107.22 : x
  2. Step 2: Convert to fraction form
    12,946.51/19,428.41 = 7,107.22/x
  3. Step 3: Cross multiply
    12,946.51x = 19,428.41 × 7,107.22
  4. Step 4: Simplify right side
    12,946.51x = 138,081,984.12
  5. Step 5: Solve for x
    x = 138,081,984.12/12,946.51
  6. Step 6: Final answer
    x = 10,665.58

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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.