Home / 31,604.86-43,604.24-20,855.07

Finding the Fourth Proportional to 31,604.86, 43,604.24 and 20,855.07

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Solution

The fourth proportional to 31,604.86, 43,604.24 and 20,855.07 is: 28,773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,604.86 : 43,604.24 = 20,855.07 : x
  2. Step 2: Convert to fraction form
    31,604.86/43,604.24 = 20,855.07/x
  3. Step 3: Cross multiply
    31,604.86x = 43,604.24 × 20,855.07
  4. Step 4: Simplify right side
    31,604.86x = 909,369,259.48
  5. Step 5: Solve for x
    x = 909,369,259.48/31,604.86
  6. Step 6: Final answer
    x = 28,773.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.