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Finding the Fourth Proportional to 43,557.88, 65,330.67 and 13,971.87

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Solution

The fourth proportional to 43,557.88, 65,330.67 and 13,971.87 is: 20,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,557.88 : 65,330.67 = 13,971.87 : x
  2. Step 2: Convert to fraction form
    43,557.88/65,330.67 = 13,971.87/x
  3. Step 3: Cross multiply
    43,557.88x = 65,330.67 × 13,971.87
  4. Step 4: Simplify right side
    43,557.88x = 912,791,628.25
  5. Step 5: Solve for x
    x = 912,791,628.25/43,557.88
  6. Step 6: Final answer
    x = 20,955.83

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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.