Home / 13,415,131.92-20,122,268.84-5,638,166.40

Finding the Fourth Proportional to 13,415,131.92, 20,122,268.84 and 5,638,166.40

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Solution

The fourth proportional to 13,415,131.92, 20,122,268.84 and 5,638,166.40 is: 8,457,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415,131.92 : 20,122,268.84 = 5,638,166.40 : x
  2. Step 2: Convert to fraction form
    13,415,131.92/20,122,268.84 = 5,638,166.40/x
  3. Step 3: Cross multiply
    13,415,131.92x = 20,122,268.84 × 5,638,166.40
  4. Step 4: Simplify right side
    13,415,131.92x = 113,452,700,065,454.98
  5. Step 5: Solve for x
    x = 113,452,700,065,454.98/13,415,131.92
  6. Step 6: Final answer
    x = 8,457,069.28

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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.