Home / 28,111.33-38,789.88-18,053.40

Finding the Fourth Proportional to 28,111.33, 38,789.88 and 18,053.40

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Solution

The fourth proportional to 28,111.33, 38,789.88 and 18,053.40 is: 24,911.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.33 : 38,789.88 = 18,053.40 : x
  2. Step 2: Convert to fraction form
    28,111.33/38,789.88 = 18,053.40/x
  3. Step 3: Cross multiply
    28,111.33x = 38,789.88 × 18,053.40
  4. Step 4: Simplify right side
    28,111.33x = 700,289,093.34
  5. Step 5: Solve for x
    x = 700,289,093.34/28,111.33
  6. Step 6: Final answer
    x = 24,911.27

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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.