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Finding the Fourth Proportional to 30,581.54, 45,871.90 and 8,394.89

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Solution

The fourth proportional to 30,581.54, 45,871.90 and 8,394.89 is: 12,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.54 : 45,871.90 = 8,394.89 : x
  2. Step 2: Convert to fraction form
    30,581.54/45,871.90 = 8,394.89/x
  3. Step 3: Cross multiply
    30,581.54x = 45,871.90 × 8,394.89
  4. Step 4: Simplify right side
    30,581.54x = 385,089,554.59
  5. Step 5: Solve for x
    x = 385,089,554.59/30,581.54
  6. Step 6: Final answer
    x = 12,592.22

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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.