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Finding the Fourth Proportional to 43,459.76, 65,189.09 and 13,877.22

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Solution

The fourth proportional to 43,459.76, 65,189.09 and 13,877.22 is: 20,815.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,459.76 : 65,189.09 = 13,877.22 : x
  2. Step 2: Convert to fraction form
    43,459.76/65,189.09 = 13,877.22/x
  3. Step 3: Cross multiply
    43,459.76x = 65,189.09 × 13,877.22
  4. Step 4: Simplify right side
    43,459.76x = 904,643,343.53
  5. Step 5: Solve for x
    x = 904,643,343.53/43,459.76
  6. Step 6: Final answer
    x = 20,815.65

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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.