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Finding the Fourth Proportional to 12,462,427.80, 18,693,641.70 and 10,751,938.20

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Solution

The fourth proportional to 12,462,427.80, 18,693,641.70 and 10,751,938.20 is: 16,127,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462,427.80 : 18,693,641.70 = 10,751,938.20 : x
  2. Step 2: Convert to fraction form
    12,462,427.80/18,693,641.70 = 10,751,938.20/x
  3. Step 3: Cross multiply
    12,462,427.80x = 18,693,641.70 × 10,751,938.20
  4. Step 4: Simplify right side
    12,462,427.80x = 200,992,880,291,342.91
  5. Step 5: Solve for x
    x = 200,992,880,291,342.91/12,462,427.80
  6. Step 6: Final answer
    x = 16,127,907.30

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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.