Home / 31,220.64-46,783.08-21,212.64

Finding the Fourth Proportional to 31,220.64, 46,783.08 and 21,212.64

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Solution

The fourth proportional to 31,220.64, 46,783.08 and 21,212.64 is: 31,786.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,220.64 : 46,783.08 = 21,212.64 : x
  2. Step 2: Convert to fraction form
    31,220.64/46,783.08 = 21,212.64/x
  3. Step 3: Cross multiply
    31,220.64x = 46,783.08 × 21,212.64
  4. Step 4: Simplify right side
    31,220.64x = 992,392,634.13
  5. Step 5: Solve for x
    x = 992,392,634.13/31,220.64
  6. Step 6: Final answer
    x = 31,786.43

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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.