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Finding the Fourth Proportional to 30,353.40, 41,894.40 and 19,724.56

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Solution

The fourth proportional to 30,353.40, 41,894.40 and 19,724.56 is: 27,224.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,353.40 : 41,894.40 = 19,724.56 : x
  2. Step 2: Convert to fraction form
    30,353.40/41,894.40 = 19,724.56/x
  3. Step 3: Cross multiply
    30,353.40x = 41,894.40 × 19,724.56
  4. Step 4: Simplify right side
    30,353.40x = 826,348,606.46
  5. Step 5: Solve for x
    x = 826,348,606.46/30,353.40
  6. Step 6: Final answer
    x = 27,224.25

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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.