Home / 12,743.79-17,586.07-7,078.51

Finding the Fourth Proportional to 12,743.79, 17,586.07 and 7,078.51

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Solution

The fourth proportional to 12,743.79, 17,586.07 and 7,078.51 is: 9,768.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.79 : 17,586.07 = 7,078.51 : x
  2. Step 2: Convert to fraction form
    12,743.79/17,586.07 = 7,078.51/x
  3. Step 3: Cross multiply
    12,743.79x = 17,586.07 × 7,078.51
  4. Step 4: Simplify right side
    12,743.79x = 124,483,172.36
  5. Step 5: Solve for x
    x = 124,483,172.36/12,743.79
  6. Step 6: Final answer
    x = 9,768.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.