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Finding the Fourth Proportional to 28,751.76, 43,160.45 and 19,271.12

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Solution

The fourth proportional to 28,751.76, 43,160.45 and 19,271.12 is: 28,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.76 : 43,160.45 = 19,271.12 : x
  2. Step 2: Convert to fraction form
    28,751.76/43,160.45 = 19,271.12/x
  3. Step 3: Cross multiply
    28,751.76x = 43,160.45 × 19,271.12
  4. Step 4: Simplify right side
    28,751.76x = 831,749,899.05
  5. Step 5: Solve for x
    x = 831,749,899.05/28,751.76
  6. Step 6: Final answer
    x = 28,928.66

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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.