Home / 43,438.51-65,161.41-13,860.55

Finding the Fourth Proportional to 43,438.51, 65,161.41 and 13,860.55

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Solution

The fourth proportional to 43,438.51, 65,161.41 and 13,860.55 is: 20,791.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,438.51 : 65,161.41 = 13,860.55 : x
  2. Step 2: Convert to fraction form
    43,438.51/65,161.41 = 13,860.55/x
  3. Step 3: Cross multiply
    43,438.51x = 65,161.41 × 13,860.55
  4. Step 4: Simplify right side
    43,438.51x = 903,172,981.38
  5. Step 5: Solve for x
    x = 903,172,981.38/43,438.51
  6. Step 6: Final answer
    x = 20,791.99

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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.