Home / 13,671.96-18,858.74-8,357.55

Finding the Fourth Proportional to 13,671.96, 18,858.74 and 8,357.55

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Solution

The fourth proportional to 13,671.96, 18,858.74 and 8,357.55 is: 11,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.96 : 18,858.74 = 8,357.55 : x
  2. Step 2: Convert to fraction form
    13,671.96/18,858.74 = 8,357.55/x
  3. Step 3: Cross multiply
    13,671.96x = 18,858.74 × 8,357.55
  4. Step 4: Simplify right side
    13,671.96x = 157,612,820.70
  5. Step 5: Solve for x
    x = 157,612,820.70/13,671.96
  6. Step 6: Final answer
    x = 11,528.18

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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.