Home / 28,148.19-38,838.09-16,815.88

Finding the Fourth Proportional to 28,148.19, 38,838.09 and 16,815.88

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Solution

The fourth proportional to 28,148.19, 38,838.09 and 16,815.88 is: 23,202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.19 : 38,838.09 = 16,815.88 : x
  2. Step 2: Convert to fraction form
    28,148.19/38,838.09 = 16,815.88/x
  3. Step 3: Cross multiply
    28,148.19x = 38,838.09 × 16,815.88
  4. Step 4: Simplify right side
    28,148.19x = 653,096,660.87
  5. Step 5: Solve for x
    x = 653,096,660.87/28,148.19
  6. Step 6: Final answer
    x = 23,202.08

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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.