Home / 12,474.80-18,611.26-11,783.60

Finding the Fourth Proportional to 12,474.80, 18,611.26 and 11,783.60

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Solution

The fourth proportional to 12,474.80, 18,611.26 and 11,783.60 is: 17,580.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.80 : 18,611.26 = 11,783.60 : x
  2. Step 2: Convert to fraction form
    12,474.80/18,611.26 = 11,783.60/x
  3. Step 3: Cross multiply
    12,474.80x = 18,611.26 × 11,783.60
  4. Step 4: Simplify right side
    12,474.80x = 219,307,643.34
  5. Step 5: Solve for x
    x = 219,307,643.34/12,474.80
  6. Step 6: Final answer
    x = 17,580.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.