Home / 28,553.19-39,402.93-15,806.11

Finding the Fourth Proportional to 28,553.19, 39,402.93 and 15,806.11

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Solution

The fourth proportional to 28,553.19, 39,402.93 and 15,806.11 is: 21,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.19 : 39,402.93 = 15,806.11 : x
  2. Step 2: Convert to fraction form
    28,553.19/39,402.93 = 15,806.11/x
  3. Step 3: Cross multiply
    28,553.19x = 39,402.93 × 15,806.11
  4. Step 4: Simplify right side
    28,553.19x = 622,806,872.56
  5. Step 5: Solve for x
    x = 622,806,872.56/28,553.19
  6. Step 6: Final answer
    x = 21,812.16

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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.