Home / 28,063,143.60-42,082,273.80-12,921,716.40

Finding the Fourth Proportional to 28,063,143.60, 42,082,273.80 and 12,921,716.40

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Solution

The fourth proportional to 28,063,143.60, 42,082,273.80 and 12,921,716.40 is: 19,376,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063,143.60 : 42,082,273.80 = 12,921,716.40 : x
  2. Step 2: Convert to fraction form
    28,063,143.60/42,082,273.80 = 12,921,716.40/x
  3. Step 3: Cross multiply
    28,063,143.60x = 42,082,273.80 × 12,921,716.40
  4. Step 4: Simplify right side
    28,063,143.60x = 543,775,207,510,750.31
  5. Step 5: Solve for x
    x = 543,775,207,510,750.31/28,063,143.60
  6. Step 6: Final answer
    x = 19,376,845.85

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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.