Home / 21,050,317.80-31,575,476.70-12,972,414.60

Finding the Fourth Proportional to 21,050,317.80, 31,575,476.70 and 12,972,414.60

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Solution

The fourth proportional to 21,050,317.80, 31,575,476.70 and 12,972,414.60 is: 19,458,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050,317.80 : 31,575,476.70 = 12,972,414.60 : x
  2. Step 2: Convert to fraction form
    21,050,317.80/31,575,476.70 = 12,972,414.60/x
  3. Step 3: Cross multiply
    21,050,317.80x = 31,575,476.70 × 12,972,414.60
  4. Step 4: Simplify right side
    21,050,317.80x = 409,610,174,945,039.81
  5. Step 5: Solve for x
    x = 409,610,174,945,039.81/21,050,317.80
  6. Step 6: Final answer
    x = 19,458,621.90

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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.