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Finding the Fourth Proportional to 11,010.88, 15,189.96 and 7,030

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Solution

The fourth proportional to 11,010.88, 15,189.96 and 7,030 is: 9,698.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,010.88 : 15,189.96 = 7,030 : x
  2. Step 2: Convert to fraction form
    11,010.88/15,189.96 = 7,030/x
  3. Step 3: Cross multiply
    11,010.88x = 15,189.96 × 7,030
  4. Step 4: Simplify right side
    11,010.88x = 106,785,418.80
  5. Step 5: Solve for x
    x = 106,785,418.80/11,010.88
  6. Step 6: Final answer
    x = 9,698.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.