Home / 11,141.40-16,720.50-7,623

Finding the Fourth Proportional to 11,141.40, 16,720.50 and 7,623

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Solution

The fourth proportional to 11,141.40, 16,720.50 and 7,623 is: 11,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.40 : 16,720.50 = 7,623 : x
  2. Step 2: Convert to fraction form
    11,141.40/16,720.50 = 7,623/x
  3. Step 3: Cross multiply
    11,141.40x = 16,720.50 × 7,623
  4. Step 4: Simplify right side
    11,141.40x = 127,460,371.50
  5. Step 5: Solve for x
    x = 127,460,371.50/11,141.40
  6. Step 6: Final answer
    x = 11,440.25

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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.