Home / 39,973.89-55,163.08-21,824.00

Finding the Fourth Proportional to 39,973.89, 55,163.08 and 21,824.00

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Solution

The fourth proportional to 39,973.89, 55,163.08 and 21,824.00 is: 30,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,973.89 : 55,163.08 = 21,824.00 : x
  2. Step 2: Convert to fraction form
    39,973.89/55,163.08 = 21,824.00/x
  3. Step 3: Cross multiply
    39,973.89x = 55,163.08 × 21,824.00
  4. Step 4: Simplify right side
    39,973.89x = 1,203,879,016.25
  5. Step 5: Solve for x
    x = 1,203,879,016.25/39,973.89
  6. Step 6: Final answer
    x = 30,116.63

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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.