Home / 25,658.36-35,428.56-19,680.56

Finding the Fourth Proportional to 25,658.36, 35,428.56 and 19,680.56

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Solution

The fourth proportional to 25,658.36, 35,428.56 and 19,680.56 is: 27,174.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,658.36 : 35,428.56 = 19,680.56 : x
  2. Step 2: Convert to fraction form
    25,658.36/35,428.56 = 19,680.56/x
  3. Step 3: Cross multiply
    25,658.36x = 35,428.56 × 19,680.56
  4. Step 4: Simplify right side
    25,658.36x = 697,253,900.79
  5. Step 5: Solve for x
    x = 697,253,900.79/25,658.36
  6. Step 6: Final answer
    x = 27,174.53

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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.