Home / 30,473.08-45,662.40-21,131.32

Finding the Fourth Proportional to 30,473.08, 45,662.40 and 21,131.32

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Solution

The fourth proportional to 30,473.08, 45,662.40 and 21,131.32 is: 31,664.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,473.08 : 45,662.40 = 21,131.32 : x
  2. Step 2: Convert to fraction form
    30,473.08/45,662.40 = 21,131.32/x
  3. Step 3: Cross multiply
    30,473.08x = 45,662.40 × 21,131.32
  4. Step 4: Simplify right side
    30,473.08x = 964,906,786.37
  5. Step 5: Solve for x
    x = 964,906,786.37/30,473.08
  6. Step 6: Final answer
    x = 31,664.24

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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.