Home / 13,983.48-20,975.29-5,218.31

Finding the Fourth Proportional to 13,983.48, 20,975.29 and 5,218.31

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Solution

The fourth proportional to 13,983.48, 20,975.29 and 5,218.31 is: 7,827.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.48 : 20,975.29 = 5,218.31 : x
  2. Step 2: Convert to fraction form
    13,983.48/20,975.29 = 5,218.31/x
  3. Step 3: Cross multiply
    13,983.48x = 20,975.29 × 5,218.31
  4. Step 4: Simplify right side
    13,983.48x = 109,455,604.95
  5. Step 5: Solve for x
    x = 109,455,604.95/13,983.48
  6. Step 6: Final answer
    x = 7,827.49

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1.5x scale

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.