Home / 13,684.34-18,887.97-8,917.35

Finding the Fourth Proportional to 13,684.34, 18,887.97 and 8,917.35

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Solution

The fourth proportional to 13,684.34, 18,887.97 and 8,917.35 is: 12,308.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.34 : 18,887.97 = 8,917.35 : x
  2. Step 2: Convert to fraction form
    13,684.34/18,887.97 = 8,917.35/x
  3. Step 3: Cross multiply
    13,684.34x = 18,887.97 × 8,917.35
  4. Step 4: Simplify right side
    13,684.34x = 168,430,639.28
  5. Step 5: Solve for x
    x = 168,430,639.28/13,684.34
  6. Step 6: Final answer
    x = 12,308.28

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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.