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Finding the Fourth Proportional to 18,462,804.40, 27,693,947.40 and 8,365,409.20

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Solution

The fourth proportional to 18,462,804.40, 27,693,947.40 and 8,365,409.20 is: 12,547,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462,804.40 : 27,693,947.40 = 8,365,409.20 : x
  2. Step 2: Convert to fraction form
    18,462,804.40/27,693,947.40 = 8,365,409.20/x
  3. Step 3: Cross multiply
    18,462,804.40x = 27,693,947.40 × 8,365,409.20
  4. Step 4: Simplify right side
    18,462,804.40x = 231,671,202,364,276.06
  5. Step 5: Solve for x
    x = 231,671,202,364,276.06/18,462,804.40
  6. Step 6: Final answer
    x = 12,547,996.36

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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.