Home / 12,900,467.20-19,357,699.20-5,328,198.40

Finding the Fourth Proportional to 12,900,467.20, 19,357,699.20 and 5,328,198.40

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Solution

The fourth proportional to 12,900,467.20, 19,357,699.20 and 5,328,198.40 is: 7,995,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900,467.20 : 19,357,699.20 = 5,328,198.40 : x
  2. Step 2: Convert to fraction form
    12,900,467.20/19,357,699.20 = 5,328,198.40/x
  3. Step 3: Cross multiply
    12,900,467.20x = 19,357,699.20 × 5,328,198.40
  4. Step 4: Simplify right side
    12,900,467.20x = 103,141,661,905,121.28
  5. Step 5: Solve for x
    x = 103,141,661,905,121.28/12,900,467.20
  6. Step 6: Final answer
    x = 7,995,188.10

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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.