Home / 25,745.16-35,531.30-15,679.50

Finding the Fourth Proportional to 25,745.16, 35,531.30 and 15,679.50

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Solution

The fourth proportional to 25,745.16, 35,531.30 and 15,679.50 is: 21,639.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,745.16 : 35,531.30 = 15,679.50 : x
  2. Step 2: Convert to fraction form
    25,745.16/35,531.30 = 15,679.50/x
  3. Step 3: Cross multiply
    25,745.16x = 35,531.30 × 15,679.50
  4. Step 4: Simplify right side
    25,745.16x = 557,113,018.35
  5. Step 5: Solve for x
    x = 557,113,018.35/25,745.16
  6. Step 6: Final answer
    x = 21,639.52

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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.