Home / 20,980.14-28,952.79-11,548.89

Finding the Fourth Proportional to 20,980.14, 28,952.79 and 11,548.89

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Solution

The fourth proportional to 20,980.14, 28,952.79 and 11,548.89 is: 15,937.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.14 : 28,952.79 = 11,548.89 : x
  2. Step 2: Convert to fraction form
    20,980.14/28,952.79 = 11,548.89/x
  3. Step 3: Cross multiply
    20,980.14x = 28,952.79 × 11,548.89
  4. Step 4: Simplify right side
    20,980.14x = 334,372,586.90
  5. Step 5: Solve for x
    x = 334,372,586.90/20,980.14
  6. Step 6: Final answer
    x = 15,937.58

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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.