Home / 39,899.27-55,058.51-21,993.35

Finding the Fourth Proportional to 39,899.27, 55,058.51 and 21,993.35

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Solution

The fourth proportional to 39,899.27, 55,058.51 and 21,993.35 is: 30,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.27 : 55,058.51 = 21,993.35 : x
  2. Step 2: Convert to fraction form
    39,899.27/55,058.51 = 21,993.35/x
  3. Step 3: Cross multiply
    39,899.27x = 55,058.51 × 21,993.35
  4. Step 4: Simplify right side
    39,899.27x = 1,210,920,860.60
  5. Step 5: Solve for x
    x = 1,210,920,860.60/39,899.27
  6. Step 6: Final answer
    x = 30,349.45

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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.