Home / 28,455.56-42,679.59-8,732.46

Finding the Fourth Proportional to 28,455.56, 42,679.59 and 8,732.46

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Solution

The fourth proportional to 28,455.56, 42,679.59 and 8,732.46 is: 13,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.56 : 42,679.59 = 8,732.46 : x
  2. Step 2: Convert to fraction form
    28,455.56/42,679.59 = 8,732.46/x
  3. Step 3: Cross multiply
    28,455.56x = 42,679.59 × 8,732.46
  4. Step 4: Simplify right side
    28,455.56x = 372,697,812.49
  5. Step 5: Solve for x
    x = 372,697,812.49/28,455.56
  6. Step 6: Final answer
    x = 13,097.54

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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.