Home / 28,505-42,746.52-11,872.88

Finding the Fourth Proportional to 28,505, 42,746.52 and 11,872.88

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Solution

The fourth proportional to 28,505, 42,746.52 and 11,872.88 is: 17,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505 : 42,746.52 = 11,872.88 : x
  2. Step 2: Convert to fraction form
    28,505/42,746.52 = 11,872.88/x
  3. Step 3: Cross multiply
    28,505x = 42,746.52 × 11,872.88
  4. Step 4: Simplify right side
    28,505x = 507,524,302.38
  5. Step 5: Solve for x
    x = 507,524,302.38/28,505
  6. Step 6: Final answer
    x = 17,804.75

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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.