Home / 28,752.78-43,128.93-7,976.28

Finding the Fourth Proportional to 28,752.78, 43,128.93 and 7,976.28

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Solution

The fourth proportional to 28,752.78, 43,128.93 and 7,976.28 is: 11,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,752.78 : 43,128.93 = 7,976.28 : x
  2. Step 2: Convert to fraction form
    28,752.78/43,128.93 = 7,976.28/x
  3. Step 3: Cross multiply
    28,752.78x = 43,128.93 × 7,976.28
  4. Step 4: Simplify right side
    28,752.78x = 344,008,421.78
  5. Step 5: Solve for x
    x = 344,008,421.78/28,752.78
  6. Step 6: Final answer
    x = 11,964.35

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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.