Home / 20,421,311.70-28,182,804.18-12,477,255.33

Finding the Fourth Proportional to 20,421,311.70, 28,182,804.18 and 12,477,255.33

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Solution

The fourth proportional to 20,421,311.70, 28,182,804.18 and 12,477,255.33 is: 17,219,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,311.70 : 28,182,804.18 = 12,477,255.33 : x
  2. Step 2: Convert to fraction form
    20,421,311.70/28,182,804.18 = 12,477,255.33/x
  3. Step 3: Cross multiply
    20,421,311.70x = 28,182,804.18 × 12,477,255.33
  4. Step 4: Simplify right side
    20,421,311.70x = 351,644,043,669,251.25
  5. Step 5: Solve for x
    x = 351,644,043,669,251.25/20,421,311.70
  6. Step 6: Final answer
    x = 17,219,464.10

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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.