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Finding the Fourth Proportional to 30,423.34, 41,958.03 and 19,809.10

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Solution

The fourth proportional to 30,423.34, 41,958.03 and 19,809.10 is: 27,319.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.34 : 41,958.03 = 19,809.10 : x
  2. Step 2: Convert to fraction form
    30,423.34/41,958.03 = 19,809.10/x
  3. Step 3: Cross multiply
    30,423.34x = 41,958.03 × 19,809.10
  4. Step 4: Simplify right side
    30,423.34x = 831,150,812.07
  5. Step 5: Solve for x
    x = 831,150,812.07/30,423.34
  6. Step 6: Final answer
    x = 27,319.51

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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.