Home / 43,139.80-64,708.62-13,553.56

Finding the Fourth Proportional to 43,139.80, 64,708.62 and 13,553.56

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Solution

The fourth proportional to 43,139.80, 64,708.62 and 13,553.56 is: 20,330.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.80 : 64,708.62 = 13,553.56 : x
  2. Step 2: Convert to fraction form
    43,139.80/64,708.62 = 13,553.56/x
  3. Step 3: Cross multiply
    43,139.80x = 64,708.62 × 13,553.56
  4. Step 4: Simplify right side
    43,139.80x = 877,032,163.69
  5. Step 5: Solve for x
    x = 877,032,163.69/43,139.80
  6. Step 6: Final answer
    x = 20,330.00

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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.