Home / 13,916.91-19,206.29-7,865.06

Finding the Fourth Proportional to 13,916.91, 19,206.29 and 7,865.06

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Solution

The fourth proportional to 13,916.91, 19,206.29 and 7,865.06 is: 10,854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.91 : 19,206.29 = 7,865.06 : x
  2. Step 2: Convert to fraction form
    13,916.91/19,206.29 = 7,865.06/x
  3. Step 3: Cross multiply
    13,916.91x = 19,206.29 × 7,865.06
  4. Step 4: Simplify right side
    13,916.91x = 151,058,487.87
  5. Step 5: Solve for x
    x = 151,058,487.87/13,916.91
  6. Step 6: Final answer
    x = 10,854.31

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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.