Home / 20,611.56-30,840.75-12,296.10

Finding the Fourth Proportional to 20,611.56, 30,840.75 and 12,296.10

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Solution

The fourth proportional to 20,611.56, 30,840.75 and 12,296.10 is: 18,398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.56 : 30,840.75 = 12,296.10 : x
  2. Step 2: Convert to fraction form
    20,611.56/30,840.75 = 12,296.10/x
  3. Step 3: Cross multiply
    20,611.56x = 30,840.75 × 12,296.10
  4. Step 4: Simplify right side
    20,611.56x = 379,220,946.08
  5. Step 5: Solve for x
    x = 379,220,946.08/20,611.56
  6. Step 6: Final answer
    x = 18,398.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.