Home / 13,579.41-18,739.35-7,611.60

Finding the Fourth Proportional to 13,579.41, 18,739.35 and 7,611.60

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Solution

The fourth proportional to 13,579.41, 18,739.35 and 7,611.60 is: 10,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.41 : 18,739.35 = 7,611.60 : x
  2. Step 2: Convert to fraction form
    13,579.41/18,739.35 = 7,611.60/x
  3. Step 3: Cross multiply
    13,579.41x = 18,739.35 × 7,611.60
  4. Step 4: Simplify right side
    13,579.41x = 142,636,436.46
  5. Step 5: Solve for x
    x = 142,636,436.46/13,579.41
  6. Step 6: Final answer
    x = 10,503.88

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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.