Home / 19,709.68-27,192.36-11,321.32

Finding the Fourth Proportional to 19,709.68, 27,192.36 and 11,321.32

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Solution

The fourth proportional to 19,709.68, 27,192.36 and 11,321.32 is: 15,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.68 : 27,192.36 = 11,321.32 : x
  2. Step 2: Convert to fraction form
    19,709.68/27,192.36 = 11,321.32/x
  3. Step 3: Cross multiply
    19,709.68x = 27,192.36 × 11,321.32
  4. Step 4: Simplify right side
    19,709.68x = 307,853,409.12
  5. Step 5: Solve for x
    x = 307,853,409.12/19,709.68
  6. Step 6: Final answer
    x = 15,619.40

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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.