Home / 38,910.40-53,695.78-21,914.67

Finding the Fourth Proportional to 38,910.40, 53,695.78 and 21,914.67

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Solution

The fourth proportional to 38,910.40, 53,695.78 and 21,914.67 is: 30,241.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,910.40 : 53,695.78 = 21,914.67 : x
  2. Step 2: Convert to fraction form
    38,910.40/53,695.78 = 21,914.67/x
  3. Step 3: Cross multiply
    38,910.40x = 53,695.78 × 21,914.67
  4. Step 4: Simplify right side
    38,910.40x = 1,176,725,445.67
  5. Step 5: Solve for x
    x = 1,176,725,445.67/38,910.40
  6. Step 6: Final answer
    x = 30,241.93

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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.