Home / 11,758.49-17,643.77-7,812.51

Finding the Fourth Proportional to 11,758.49, 17,643.77 and 7,812.51

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Solution

The fourth proportional to 11,758.49, 17,643.77 and 7,812.51 is: 11,722.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,758.49 : 17,643.77 = 7,812.51 : x
  2. Step 2: Convert to fraction form
    11,758.49/17,643.77 = 7,812.51/x
  3. Step 3: Cross multiply
    11,758.49x = 17,643.77 × 7,812.51
  4. Step 4: Simplify right side
    11,758.49x = 137,842,129.56
  5. Step 5: Solve for x
    x = 137,842,129.56/11,758.49
  6. Step 6: Final answer
    x = 11,722.77

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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.