Home / 30,791.39-42,500.10-20,065.67

Finding the Fourth Proportional to 30,791.39, 42,500.10 and 20,065.67

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Solution

The fourth proportional to 30,791.39, 42,500.10 and 20,065.67 is: 27,695.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,791.39 : 42,500.10 = 20,065.67 : x
  2. Step 2: Convert to fraction form
    30,791.39/42,500.10 = 20,065.67/x
  3. Step 3: Cross multiply
    30,791.39x = 42,500.10 × 20,065.67
  4. Step 4: Simplify right side
    30,791.39x = 852,792,981.57
  5. Step 5: Solve for x
    x = 852,792,981.57/30,791.39
  6. Step 6: Final answer
    x = 27,695.83

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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.