Home / 20,064.87-27,688.77-11,111.67

Finding the Fourth Proportional to 20,064.87, 27,688.77 and 11,111.67

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Solution

The fourth proportional to 20,064.87, 27,688.77 and 11,111.67 is: 15,333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.87 : 27,688.77 = 11,111.67 : x
  2. Step 2: Convert to fraction form
    20,064.87/27,688.77 = 11,111.67/x
  3. Step 3: Cross multiply
    20,064.87x = 27,688.77 × 11,111.67
  4. Step 4: Simplify right side
    20,064.87x = 307,668,474.95
  5. Step 5: Solve for x
    x = 307,668,474.95/20,064.87
  6. Step 6: Final answer
    x = 15,333.69

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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.