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Finding the Fourth Proportional to 30,243.78, 45,374.90 and 15,463.08

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Solution

The fourth proportional to 30,243.78, 45,374.90 and 15,463.08 is: 23,199.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,243.78 : 45,374.90 = 15,463.08 : x
  2. Step 2: Convert to fraction form
    30,243.78/45,374.90 = 15,463.08/x
  3. Step 3: Cross multiply
    30,243.78x = 45,374.90 × 15,463.08
  4. Step 4: Simplify right side
    30,243.78x = 701,635,708.69
  5. Step 5: Solve for x
    x = 701,635,708.69/30,243.78
  6. Step 6: Final answer
    x = 23,199.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.