Home / 13,893.12-19,165.32-9,415.26

Finding the Fourth Proportional to 13,893.12, 19,165.32 and 9,415.26

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Solution

The fourth proportional to 13,893.12, 19,165.32 and 9,415.26 is: 12,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.12 : 19,165.32 = 9,415.26 : x
  2. Step 2: Convert to fraction form
    13,893.12/19,165.32 = 9,415.26/x
  3. Step 3: Cross multiply
    13,893.12x = 19,165.32 × 9,415.26
  4. Step 4: Simplify right side
    13,893.12x = 180,446,470.78
  5. Step 5: Solve for x
    x = 180,446,470.78/13,893.12
  6. Step 6: Final answer
    x = 12,988.19

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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.