Home / 28,117.96-42,176.94-11,485.84

Finding the Fourth Proportional to 28,117.96, 42,176.94 and 11,485.84

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Solution

The fourth proportional to 28,117.96, 42,176.94 and 11,485.84 is: 17,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.96 : 42,176.94 = 11,485.84 : x
  2. Step 2: Convert to fraction form
    28,117.96/42,176.94 = 11,485.84/x
  3. Step 3: Cross multiply
    28,117.96x = 42,176.94 × 11,485.84
  4. Step 4: Simplify right side
    28,117.96x = 484,437,584.53
  5. Step 5: Solve for x
    x = 484,437,584.53/28,117.96
  6. Step 6: Final answer
    x = 17,228.76

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1.5x scale

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.