Home / 28,791.45-43,187.18-13,987.62

Finding the Fourth Proportional to 28,791.45, 43,187.18 and 13,987.62

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Solution

The fourth proportional to 28,791.45, 43,187.18 and 13,987.62 is: 20,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.45 : 43,187.18 = 13,987.62 : x
  2. Step 2: Convert to fraction form
    28,791.45/43,187.18 = 13,987.62/x
  3. Step 3: Cross multiply
    28,791.45x = 43,187.18 × 13,987.62
  4. Step 4: Simplify right side
    28,791.45x = 604,085,792.77
  5. Step 5: Solve for x
    x = 604,085,792.77/28,791.45
  6. Step 6: Final answer
    x = 20,981.43

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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.