Home / 20,415,297.70-28,173,618.21-12,571,840.90

Finding the Fourth Proportional to 20,415,297.70, 28,173,618.21 and 12,571,840.90

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Solution

The fourth proportional to 20,415,297.70, 28,173,618.21 and 12,571,840.90 is: 17,349,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,297.70 : 28,173,618.21 = 12,571,840.90 : x
  2. Step 2: Convert to fraction form
    20,415,297.70/28,173,618.21 = 12,571,840.90/x
  3. Step 3: Cross multiply
    20,415,297.70x = 28,173,618.21 × 12,571,840.90
  4. Step 4: Simplify right side
    20,415,297.70x = 354,194,245,713,462.81
  5. Step 5: Solve for x
    x = 354,194,245,713,462.81/20,415,297.70
  6. Step 6: Final answer
    x = 17,349,452.89

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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.