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Finding the Fourth Proportional to 29,770.40, 44,655.60 and 8,991.20

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Solution

The fourth proportional to 29,770.40, 44,655.60 and 8,991.20 is: 13,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,770.40 : 44,655.60 = 8,991.20 : x
  2. Step 2: Convert to fraction form
    29,770.40/44,655.60 = 8,991.20/x
  3. Step 3: Cross multiply
    29,770.40x = 44,655.60 × 8,991.20
  4. Step 4: Simplify right side
    29,770.40x = 401,507,430.72
  5. Step 5: Solve for x
    x = 401,507,430.72/29,770.40
  6. Step 6: Final answer
    x = 13,486.80

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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.