Home / 11,985.28-17,979.84-5,059.84

Finding the Fourth Proportional to 11,985.28, 17,979.84 and 5,059.84

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Solution

The fourth proportional to 11,985.28, 17,979.84 and 5,059.84 is: 7,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.28 : 17,979.84 = 5,059.84 : x
  2. Step 2: Convert to fraction form
    11,985.28/17,979.84 = 5,059.84/x
  3. Step 3: Cross multiply
    11,985.28x = 17,979.84 × 5,059.84
  4. Step 4: Simplify right side
    11,985.28x = 90,975,113.63
  5. Step 5: Solve for x
    x = 90,975,113.63/11,985.28
  6. Step 6: Final answer
    x = 7,590.57

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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.