Home / 13,615.36-20,440.32-11,576.32

Finding the Fourth Proportional to 13,615.36, 20,440.32 and 11,576.32

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Solution

The fourth proportional to 13,615.36, 20,440.32 and 11,576.32 is: 17,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.36 : 20,440.32 = 11,576.32 : x
  2. Step 2: Convert to fraction form
    13,615.36/20,440.32 = 11,576.32/x
  3. Step 3: Cross multiply
    13,615.36x = 20,440.32 × 11,576.32
  4. Step 4: Simplify right side
    13,615.36x = 236,623,685.22
  5. Step 5: Solve for x
    x = 236,623,685.22/13,615.36
  6. Step 6: Final answer
    x = 17,379.17

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1.5x scale

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.