Home / 28,455.73-42,688.60-9,731.36

Finding the Fourth Proportional to 28,455.73, 42,688.60 and 9,731.36

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Solution

The fourth proportional to 28,455.73, 42,688.60 and 9,731.36 is: 14,598.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.73 : 42,688.60 = 9,731.36 : x
  2. Step 2: Convert to fraction form
    28,455.73/42,688.60 = 9,731.36/x
  3. Step 3: Cross multiply
    28,455.73x = 42,688.60 × 9,731.36
  4. Step 4: Simplify right side
    28,455.73x = 415,418,134.50
  5. Step 5: Solve for x
    x = 415,418,134.50/28,455.73
  6. Step 6: Final answer
    x = 14,598.75

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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.