Home / 28,163,118.21-38,858,441.20-15,939,975.21

Finding the Fourth Proportional to 28,163,118.21, 38,858,441.20 and 15,939,975.21

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Solution

The fourth proportional to 28,163,118.21, 38,858,441.20 and 15,939,975.21 is: 21,993,395.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163,118.21 : 38,858,441.20 = 15,939,975.21 : x
  2. Step 2: Convert to fraction form
    28,163,118.21/38,858,441.20 = 15,939,975.21/x
  3. Step 3: Cross multiply
    28,163,118.21x = 38,858,441.20 × 15,939,975.21
  4. Step 4: Simplify right side
    28,163,118.21x = 619,402,589,427,242.75
  5. Step 5: Solve for x
    x = 619,402,589,427,242.75/28,163,118.21
  6. Step 6: Final answer
    x = 21,993,395.22

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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.