Home / 39,899.61-55,061.82-21,995.25

Finding the Fourth Proportional to 39,899.61, 55,061.82 and 21,995.25

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Solution

The fourth proportional to 39,899.61, 55,061.82 and 21,995.25 is: 30,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.61 : 55,061.82 = 21,995.25 : x
  2. Step 2: Convert to fraction form
    39,899.61/55,061.82 = 21,995.25/x
  3. Step 3: Cross multiply
    39,899.61x = 55,061.82 × 21,995.25
  4. Step 4: Simplify right side
    39,899.61x = 1,211,098,496.36
  5. Step 5: Solve for x
    x = 1,211,098,496.36/39,899.61
  6. Step 6: Final answer
    x = 30,353.64

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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.