Home / 21,011,820.58-31,453,087.66-13,709,556.76

Finding the Fourth Proportional to 21,011,820.58, 31,453,087.66 and 13,709,556.76

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Solution

The fourth proportional to 21,011,820.58, 31,453,087.66 and 13,709,556.76 is: 20,522,157.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011,820.58 : 31,453,087.66 = 13,709,556.76 : x
  2. Step 2: Convert to fraction form
    21,011,820.58/31,453,087.66 = 13,709,556.76/x
  3. Step 3: Cross multiply
    21,011,820.58x = 31,453,087.66 × 13,709,556.76
  4. Step 4: Simplify right side
    21,011,820.58x = 431,207,890,552,025.56
  5. Step 5: Solve for x
    x = 431,207,890,552,025.56/21,011,820.58
  6. Step 6: Final answer
    x = 20,522,157.46

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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.