Home / 13,169,331.40-19,787,174.70-8,379,315.40

Finding the Fourth Proportional to 13,169,331.40, 19,787,174.70 and 8,379,315.40

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Solution

The fourth proportional to 13,169,331.40, 19,787,174.70 and 8,379,315.40 is: 12,590,083.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169,331.40 : 19,787,174.70 = 8,379,315.40 : x
  2. Step 2: Convert to fraction form
    13,169,331.40/19,787,174.70 = 8,379,315.40/x
  3. Step 3: Cross multiply
    13,169,331.40x = 19,787,174.70 × 8,379,315.40
  4. Step 4: Simplify right side
    13,169,331.40x = 165,802,977,686,200.38
  5. Step 5: Solve for x
    x = 165,802,977,686,200.38/13,169,331.40
  6. Step 6: Final answer
    x = 12,590,083.18

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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.