Home / 28,479,745.72-39,302,237.81-15,427,004.63

Finding the Fourth Proportional to 28,479,745.72, 39,302,237.81 and 15,427,004.63

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Solution

The fourth proportional to 28,479,745.72, 39,302,237.81 and 15,427,004.63 is: 21,289,368.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479,745.72 : 39,302,237.81 = 15,427,004.63 : x
  2. Step 2: Convert to fraction form
    28,479,745.72/39,302,237.81 = 15,427,004.63/x
  3. Step 3: Cross multiply
    28,479,745.72x = 39,302,237.81 × 15,427,004.63
  4. Step 4: Simplify right side
    28,479,745.72x = 606,315,804,587,096.12
  5. Step 5: Solve for x
    x = 606,315,804,587,096.12/28,479,745.72
  6. Step 6: Final answer
    x = 21,289,368.61

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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.