Home / 28,806.12-39,749.58-21,256.56

Finding the Fourth Proportional to 28,806.12, 39,749.58 and 21,256.56

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Solution

The fourth proportional to 28,806.12, 39,749.58 and 21,256.56 is: 29,331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,806.12 : 39,749.58 = 21,256.56 : x
  2. Step 2: Convert to fraction form
    28,806.12/39,749.58 = 21,256.56/x
  3. Step 3: Cross multiply
    28,806.12x = 39,749.58 × 21,256.56
  4. Step 4: Simplify right side
    28,806.12x = 844,939,332.24
  5. Step 5: Solve for x
    x = 844,939,332.24/28,806.12
  6. Step 6: Final answer
    x = 29,331.94

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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.