Home / 25,686.37-38,529.15-8,155.95

Finding the Fourth Proportional to 25,686.37, 38,529.15 and 8,155.95

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Solution

The fourth proportional to 25,686.37, 38,529.15 and 8,155.95 is: 12,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,686.37 : 38,529.15 = 8,155.95 : x
  2. Step 2: Convert to fraction form
    25,686.37/38,529.15 = 8,155.95/x
  3. Step 3: Cross multiply
    25,686.37x = 38,529.15 × 8,155.95
  4. Step 4: Simplify right side
    25,686.37x = 314,241,820.94
  5. Step 5: Solve for x
    x = 314,241,820.94/25,686.37
  6. Step 6: Final answer
    x = 12,233.80

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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.