Home / 20,984.47-28,958.51-11,553.03

Finding the Fourth Proportional to 20,984.47, 28,958.51 and 11,553.03

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Solution

The fourth proportional to 20,984.47, 28,958.51 and 11,553.03 is: 15,943.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.47 : 28,958.51 = 11,553.03 : x
  2. Step 2: Convert to fraction form
    20,984.47/28,958.51 = 11,553.03/x
  3. Step 3: Cross multiply
    20,984.47x = 28,958.51 × 11,553.03
  4. Step 4: Simplify right side
    20,984.47x = 334,558,563.67
  5. Step 5: Solve for x
    x = 334,558,563.67/20,984.47
  6. Step 6: Final answer
    x = 15,943.15

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1.5x scale

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.