Home / 28,974,453.78-39,985,064.47-15,921,716.07

Finding the Fourth Proportional to 28,974,453.78, 39,985,064.47 and 15,921,716.07

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Solution

The fourth proportional to 28,974,453.78, 39,985,064.47 and 15,921,716.07 is: 21,972,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974,453.78 : 39,985,064.47 = 15,921,716.07 : x
  2. Step 2: Convert to fraction form
    28,974,453.78/39,985,064.47 = 15,921,716.07/x
  3. Step 3: Cross multiply
    28,974,453.78x = 39,985,064.47 × 15,921,716.07
  4. Step 4: Simplify right side
    28,974,453.78x = 636,630,843,531,985
  5. Step 5: Solve for x
    x = 636,630,843,531,985/28,974,453.78
  6. Step 6: Final answer
    x = 21,972,143.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.