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Finding the Fourth Proportional to 43,447.76, 65,172.77 and 13,865.57

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Solution

The fourth proportional to 43,447.76, 65,172.77 and 13,865.57 is: 20,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,447.76 : 65,172.77 = 13,865.57 : x
  2. Step 2: Convert to fraction form
    43,447.76/65,172.77 = 13,865.57/x
  3. Step 3: Cross multiply
    43,447.76x = 65,172.77 × 13,865.57
  4. Step 4: Simplify right side
    43,447.76x = 903,657,604.53
  5. Step 5: Solve for x
    x = 903,657,604.53/43,447.76
  6. Step 6: Final answer
    x = 20,798.72

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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.