Home / 39,783.93-54,901.99-21,880.07

Finding the Fourth Proportional to 39,783.93, 54,901.99 and 21,880.07

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Solution

The fourth proportional to 39,783.93, 54,901.99 and 21,880.07 is: 30,194.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,783.93 : 54,901.99 = 21,880.07 : x
  2. Step 2: Convert to fraction form
    39,783.93/54,901.99 = 21,880.07/x
  3. Step 3: Cross multiply
    39,783.93x = 54,901.99 × 21,880.07
  4. Step 4: Simplify right side
    39,783.93x = 1,201,259,274.94
  5. Step 5: Solve for x
    x = 1,201,259,274.94/39,783.93
  6. Step 6: Final answer
    x = 30,194.59

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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.