Home / 13,664.92-18,857.65-8,631.39

Finding the Fourth Proportional to 13,664.92, 18,857.65 and 8,631.39

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Solution

The fourth proportional to 13,664.92, 18,857.65 and 8,631.39 is: 11,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.92 : 18,857.65 = 8,631.39 : x
  2. Step 2: Convert to fraction form
    13,664.92/18,857.65 = 8,631.39/x
  3. Step 3: Cross multiply
    13,664.92x = 18,857.65 × 8,631.39
  4. Step 4: Simplify right side
    13,664.92x = 162,767,637.35
  5. Step 5: Solve for x
    x = 162,767,637.35/13,664.92
  6. Step 6: Final answer
    x = 11,911.35

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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.