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Finding the Fourth Proportional to 30,349.48, 41,867.39 and 20,280.39

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Solution

The fourth proportional to 30,349.48, 41,867.39 and 20,280.39 is: 27,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.48 : 41,867.39 = 20,280.39 : x
  2. Step 2: Convert to fraction form
    30,349.48/41,867.39 = 20,280.39/x
  3. Step 3: Cross multiply
    30,349.48x = 41,867.39 × 20,280.39
  4. Step 4: Simplify right side
    30,349.48x = 849,087,048.18
  5. Step 5: Solve for x
    x = 849,087,048.18/30,349.48
  6. Step 6: Final answer
    x = 27,976.99

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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.