Home / 12,991,409.40-19,487,114.10-12,767,460.60

Finding the Fourth Proportional to 12,991,409.40, 19,487,114.10 and 12,767,460.60

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Solution

The fourth proportional to 12,991,409.40, 19,487,114.10 and 12,767,460.60 is: 19,151,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991,409.40 : 19,487,114.10 = 12,767,460.60 : x
  2. Step 2: Convert to fraction form
    12,991,409.40/19,487,114.10 = 12,767,460.60/x
  3. Step 3: Cross multiply
    12,991,409.40x = 19,487,114.10 × 12,767,460.60
  4. Step 4: Simplify right side
    12,991,409.40x = 248,800,961,479,454.47
  5. Step 5: Solve for x
    x = 248,800,961,479,454.47/12,991,409.40
  6. Step 6: Final answer
    x = 19,151,190.90

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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.