Home / 28,857.39-43,351.77-20,876.77

Finding the Fourth Proportional to 28,857.39, 43,351.77 and 20,876.77

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Solution

The fourth proportional to 28,857.39, 43,351.77 and 20,876.77 is: 31,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.39 : 43,351.77 = 20,876.77 : x
  2. Step 2: Convert to fraction form
    28,857.39/43,351.77 = 20,876.77/x
  3. Step 3: Cross multiply
    28,857.39x = 43,351.77 × 20,876.77
  4. Step 4: Simplify right side
    28,857.39x = 905,044,827.00
  5. Step 5: Solve for x
    x = 905,044,827.00/28,857.39
  6. Step 6: Final answer
    x = 31,362.67

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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.