Home / 28,009.72-42,002.70-10,467.28

Finding the Fourth Proportional to 28,009.72, 42,002.70 and 10,467.28

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Solution

The fourth proportional to 28,009.72, 42,002.70 and 10,467.28 is: 15,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.72 : 42,002.70 = 10,467.28 : x
  2. Step 2: Convert to fraction form
    28,009.72/42,002.70 = 10,467.28/x
  3. Step 3: Cross multiply
    28,009.72x = 42,002.70 × 10,467.28
  4. Step 4: Simplify right side
    28,009.72x = 439,654,021.66
  5. Step 5: Solve for x
    x = 439,654,021.66/28,009.72
  6. Step 6: Final answer
    x = 15,696.48

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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.