Home / 39,903.41-55,069.18-21,998.39

Finding the Fourth Proportional to 39,903.41, 55,069.18 and 21,998.39

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Solution

The fourth proportional to 39,903.41, 55,069.18 and 21,998.39 is: 30,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.41 : 55,069.18 = 21,998.39 : x
  2. Step 2: Convert to fraction form
    39,903.41/55,069.18 = 21,998.39/x
  3. Step 3: Cross multiply
    39,903.41x = 55,069.18 × 21,998.39
  4. Step 4: Simplify right side
    39,903.41x = 1,211,432,968.28
  5. Step 5: Solve for x
    x = 1,211,432,968.28/39,903.41
  6. Step 6: Final answer
    x = 30,359.13

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Double scale
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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.