Home / 12,739,712.20-19,128,230.70-8,969,907.40

Finding the Fourth Proportional to 12,739,712.20, 19,128,230.70 and 8,969,907.40

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Solution

The fourth proportional to 12,739,712.20, 19,128,230.70 and 8,969,907.40 is: 13,468,001.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739,712.20 : 19,128,230.70 = 8,969,907.40 : x
  2. Step 2: Convert to fraction form
    12,739,712.20/19,128,230.70 = 8,969,907.40/x
  3. Step 3: Cross multiply
    12,739,712.20x = 19,128,230.70 × 8,969,907.40
  4. Step 4: Simplify right side
    12,739,712.20x = 171,578,458,104,837.19
  5. Step 5: Solve for x
    x = 171,578,458,104,837.19/12,739,712.20
  6. Step 6: Final answer
    x = 13,468,001.11

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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.