Home / 28,991,993.72-40,008,976.98-15,939,474.68

Finding the Fourth Proportional to 28,991,993.72, 40,008,976.98 and 15,939,474.68

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Solution

The fourth proportional to 28,991,993.72, 40,008,976.98 and 15,939,474.68 is: 21,996,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991,993.72 : 40,008,976.98 = 15,939,474.68 : x
  2. Step 2: Convert to fraction form
    28,991,993.72/40,008,976.98 = 15,939,474.68/x
  3. Step 3: Cross multiply
    28,991,993.72x = 40,008,976.98 × 15,939,474.68
  4. Step 4: Simplify right side
    28,991,993.72x = 637,722,075,545,412.75
  5. Step 5: Solve for x
    x = 637,722,075,545,412.75/28,991,993.72
  6. Step 6: Final answer
    x = 21,996,489.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.