Home / 20,675.64-28,532.88-11,724.06

Finding the Fourth Proportional to 20,675.64, 28,532.88 and 11,724.06

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Solution

The fourth proportional to 20,675.64, 28,532.88 and 11,724.06 is: 16,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.64 : 28,532.88 = 11,724.06 : x
  2. Step 2: Convert to fraction form
    20,675.64/28,532.88 = 11,724.06/x
  3. Step 3: Cross multiply
    20,675.64x = 28,532.88 × 11,724.06
  4. Step 4: Simplify right side
    20,675.64x = 334,521,197.09
  5. Step 5: Solve for x
    x = 334,521,197.09/20,675.64
  6. Step 6: Final answer
    x = 16,179.48

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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.