Home / 21,345.36-29,453.88-11,914.32

Finding the Fourth Proportional to 21,345.36, 29,453.88 and 11,914.32

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Solution

The fourth proportional to 21,345.36, 29,453.88 and 11,914.32 is: 16,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.36 : 29,453.88 = 11,914.32 : x
  2. Step 2: Convert to fraction form
    21,345.36/29,453.88 = 11,914.32/x
  3. Step 3: Cross multiply
    21,345.36x = 29,453.88 × 11,914.32
  4. Step 4: Simplify right side
    21,345.36x = 350,922,951.56
  5. Step 5: Solve for x
    x = 350,922,951.56/21,345.36
  6. Step 6: Final answer
    x = 16,440.25

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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.