Home / 39,078.72-58,629.02-15,721.56

Finding the Fourth Proportional to 39,078.72, 58,629.02 and 15,721.56

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Solution

The fourth proportional to 39,078.72, 58,629.02 and 15,721.56 is: 23,586.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.72 : 58,629.02 = 15,721.56 : x
  2. Step 2: Convert to fraction form
    39,078.72/58,629.02 = 15,721.56/x
  3. Step 3: Cross multiply
    39,078.72x = 58,629.02 × 15,721.56
  4. Step 4: Simplify right side
    39,078.72x = 921,739,577.06
  5. Step 5: Solve for x
    x = 921,739,577.06/39,078.72
  6. Step 6: Final answer
    x = 23,586.74

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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.