Home / 28,777.16-39,709.62-21,227.57

Finding the Fourth Proportional to 28,777.16, 39,709.62 and 21,227.57

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Solution

The fourth proportional to 28,777.16, 39,709.62 and 21,227.57 is: 29,291.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.16 : 39,709.62 = 21,227.57 : x
  2. Step 2: Convert to fraction form
    28,777.16/39,709.62 = 21,227.57/x
  3. Step 3: Cross multiply
    28,777.16x = 39,709.62 × 21,227.57
  4. Step 4: Simplify right side
    28,777.16x = 842,938,738.22
  5. Step 5: Solve for x
    x = 842,938,738.22/28,777.16
  6. Step 6: Final answer
    x = 29,291.94

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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.