Home / 25,768.85-38,828.84-21,191.41

Finding the Fourth Proportional to 25,768.85, 38,828.84 and 21,191.41

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Solution

The fourth proportional to 25,768.85, 38,828.84 and 21,191.41 is: 31,931.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,768.85 : 38,828.84 = 21,191.41 : x
  2. Step 2: Convert to fraction form
    25,768.85/38,828.84 = 21,191.41/x
  3. Step 3: Cross multiply
    25,768.85x = 38,828.84 × 21,191.41
  4. Step 4: Simplify right side
    25,768.85x = 822,837,592.43
  5. Step 5: Solve for x
    x = 822,837,592.43/25,768.85
  6. Step 6: Final answer
    x = 31,931.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.