Home / 11,977,986.80-17,943,360.60-7,171,398.20

Finding the Fourth Proportional to 11,977,986.80, 17,943,360.60 and 7,171,398.20

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Solution

The fourth proportional to 11,977,986.80, 17,943,360.60 and 7,171,398.20 is: 10,742,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977,986.80 : 17,943,360.60 = 7,171,398.20 : x
  2. Step 2: Convert to fraction form
    11,977,986.80/17,943,360.60 = 7,171,398.20/x
  3. Step 3: Cross multiply
    11,977,986.80x = 17,943,360.60 × 7,171,398.20
  4. Step 4: Simplify right side
    11,977,986.80x = 128,678,983,908,790.94
  5. Step 5: Solve for x
    x = 128,678,983,908,790.94/11,977,986.80
  6. Step 6: Final answer
    x = 10,742,955.90

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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.