Home / 13,328.96-18,393.62-8,786.07

Finding the Fourth Proportional to 13,328.96, 18,393.62 and 8,786.07

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Solution

The fourth proportional to 13,328.96, 18,393.62 and 8,786.07 is: 12,124.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.96 : 18,393.62 = 8,786.07 : x
  2. Step 2: Convert to fraction form
    13,328.96/18,393.62 = 8,786.07/x
  3. Step 3: Cross multiply
    13,328.96x = 18,393.62 × 8,786.07
  4. Step 4: Simplify right side
    13,328.96x = 161,607,588.94
  5. Step 5: Solve for x
    x = 161,607,588.94/13,328.96
  6. Step 6: Final answer
    x = 12,124.55

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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.