Home / 13,305.09-19,916.87-8,615.77

Finding the Fourth Proportional to 13,305.09, 19,916.87 and 8,615.77

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Solution

The fourth proportional to 13,305.09, 19,916.87 and 8,615.77 is: 12,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.09 : 19,916.87 = 8,615.77 : x
  2. Step 2: Convert to fraction form
    13,305.09/19,916.87 = 8,615.77/x
  3. Step 3: Cross multiply
    13,305.09x = 19,916.87 × 8,615.77
  4. Step 4: Simplify right side
    13,305.09x = 171,599,171.04
  5. Step 5: Solve for x
    x = 171,599,171.04/13,305.09
  6. Step 6: Final answer
    x = 12,897.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.