Home / 13,145.09-19,621.79-11,484.33

Finding the Fourth Proportional to 13,145.09, 19,621.79 and 11,484.33

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Solution

The fourth proportional to 13,145.09, 19,621.79 and 11,484.33 is: 17,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.09 : 19,621.79 = 11,484.33 : x
  2. Step 2: Convert to fraction form
    13,145.09/19,621.79 = 11,484.33/x
  3. Step 3: Cross multiply
    13,145.09x = 19,621.79 × 11,484.33
  4. Step 4: Simplify right side
    13,145.09x = 225,343,054.13
  5. Step 5: Solve for x
    x = 225,343,054.13/13,145.09
  6. Step 6: Final answer
    x = 17,142.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.