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Finding the Fourth Proportional to 40,649.34, 60,980.60 and 12,562.84

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Solution

The fourth proportional to 40,649.34, 60,980.60 and 12,562.84 is: 18,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,649.34 : 60,980.60 = 12,562.84 : x
  2. Step 2: Convert to fraction form
    40,649.34/60,980.60 = 12,562.84/x
  3. Step 3: Cross multiply
    40,649.34x = 60,980.60 × 12,562.84
  4. Step 4: Simplify right side
    40,649.34x = 766,089,520.90
  5. Step 5: Solve for x
    x = 766,089,520.90/40,649.34
  6. Step 6: Final answer
    x = 18,846.30

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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.