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Finding the Fourth Proportional to 39,873.71, 55,019.71 and 22,643.39

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Solution

The fourth proportional to 39,873.71, 55,019.71 and 22,643.39 is: 31,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.71 : 55,019.71 = 22,643.39 : x
  2. Step 2: Convert to fraction form
    39,873.71/55,019.71 = 22,643.39/x
  3. Step 3: Cross multiply
    39,873.71x = 55,019.71 × 22,643.39
  4. Step 4: Simplify right side
    39,873.71x = 1,245,832,751.22
  5. Step 5: Solve for x
    x = 1,245,832,751.22/39,873.71
  6. Step 6: Final answer
    x = 31,244.47

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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.