Home / 13,669.50-18,858.51-8,631.84

Finding the Fourth Proportional to 13,669.50, 18,858.51 and 8,631.84

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Solution

The fourth proportional to 13,669.50, 18,858.51 and 8,631.84 is: 11,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.50 : 18,858.51 = 8,631.84 : x
  2. Step 2: Convert to fraction form
    13,669.50/18,858.51 = 8,631.84/x
  3. Step 3: Cross multiply
    13,669.50x = 18,858.51 × 8,631.84
  4. Step 4: Simplify right side
    13,669.50x = 162,783,640.96
  5. Step 5: Solve for x
    x = 162,783,640.96/13,669.50
  6. Step 6: Final answer
    x = 11,908.53

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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.