Home / 28,553.37-39,403.16-15,806.28

Finding the Fourth Proportional to 28,553.37, 39,403.16 and 15,806.28

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Solution

The fourth proportional to 28,553.37, 39,403.16 and 15,806.28 is: 21,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.37 : 39,403.16 = 15,806.28 : x
  2. Step 2: Convert to fraction form
    28,553.37/39,403.16 = 15,806.28/x
  3. Step 3: Cross multiply
    28,553.37x = 39,403.16 × 15,806.28
  4. Step 4: Simplify right side
    28,553.37x = 622,817,379.84
  5. Step 5: Solve for x
    x = 622,817,379.84/28,553.37
  6. Step 6: Final answer
    x = 21,812.39

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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.