Home / 21,011,819.33-31,453,085.80-13,709,555.50

Finding the Fourth Proportional to 21,011,819.33, 31,453,085.80 and 13,709,555.50

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Solution

The fourth proportional to 21,011,819.33, 31,453,085.80 and 13,709,555.50 is: 20,522,155.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011,819.33 : 31,453,085.80 = 13,709,555.50 : x
  2. Step 2: Convert to fraction form
    21,011,819.33/31,453,085.80 = 13,709,555.50/x
  3. Step 3: Cross multiply
    21,011,819.33x = 31,453,085.80 × 13,709,555.50
  4. Step 4: Simplify right side
    21,011,819.33x = 431,207,825,421,361.94
  5. Step 5: Solve for x
    x = 431,207,825,421,361.94/21,011,819.33
  6. Step 6: Final answer
    x = 20,522,155.59

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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.