Home / 39,899.93-55,059.84-21,991.59

Finding the Fourth Proportional to 39,899.93, 55,059.84 and 21,991.59

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Solution

The fourth proportional to 39,899.93, 55,059.84 and 21,991.59 is: 30,347.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.93 : 55,059.84 = 21,991.59 : x
  2. Step 2: Convert to fraction form
    39,899.93/55,059.84 = 21,991.59/x
  3. Step 3: Cross multiply
    39,899.93x = 55,059.84 × 21,991.59
  4. Step 4: Simplify right side
    39,899.93x = 1,210,853,426.75
  5. Step 5: Solve for x
    x = 1,210,853,426.75/39,899.93
  6. Step 6: Final answer
    x = 30,347.26

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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.