Home / 13,755.51-20,620.71-4,988.48

Finding the Fourth Proportional to 13,755.51, 20,620.71 and 4,988.48

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Solution

The fourth proportional to 13,755.51, 20,620.71 and 4,988.48 is: 7,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.51 : 20,620.71 = 4,988.48 : x
  2. Step 2: Convert to fraction form
    13,755.51/20,620.71 = 4,988.48/x
  3. Step 3: Cross multiply
    13,755.51x = 20,620.71 × 4,988.48
  4. Step 4: Simplify right side
    13,755.51x = 102,865,896.32
  5. Step 5: Solve for x
    x = 102,865,896.32/13,755.51
  6. Step 6: Final answer
    x = 7,478.16

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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.