Home / 12,129,144.95-18,100,889.35-10,835,221.05

Finding the Fourth Proportional to 12,129,144.95, 18,100,889.35 and 10,835,221.05

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Solution

The fourth proportional to 12,129,144.95, 18,100,889.35 and 10,835,221.05 is: 16,169,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,144.95 : 18,100,889.35 = 10,835,221.05 : x
  2. Step 2: Convert to fraction form
    12,129,144.95/18,100,889.35 = 10,835,221.05/x
  3. Step 3: Cross multiply
    12,129,144.95x = 18,100,889.35 × 10,835,221.05
  4. Step 4: Simplify right side
    12,129,144.95x = 196,127,137,308,840.84
  5. Step 5: Solve for x
    x = 196,127,137,308,840.84/12,129,144.95
  6. Step 6: Final answer
    x = 16,169,906.30

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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.