Home / 20,809,515.60-31,201,831.80-10,731,819.60

Finding the Fourth Proportional to 20,809,515.60, 31,201,831.80 and 10,731,819.60

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Solution

The fourth proportional to 20,809,515.60, 31,201,831.80 and 10,731,819.60 is: 16,091,313.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,515.60 : 31,201,831.80 = 10,731,819.60 : x
  2. Step 2: Convert to fraction form
    20,809,515.60/31,201,831.80 = 10,731,819.60/x
  3. Step 3: Cross multiply
    20,809,515.60x = 31,201,831.80 × 10,731,819.60
  4. Step 4: Simplify right side
    20,809,515.60x = 334,852,430,067,143.25
  5. Step 5: Solve for x
    x = 334,852,430,067,143.25/20,809,515.60
  6. Step 6: Final answer
    x = 16,091,313.06

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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.