Home / 30,395.20-41,964.34-19,645.70

Finding the Fourth Proportional to 30,395.20, 41,964.34 and 19,645.70

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Solution

The fourth proportional to 30,395.20, 41,964.34 and 19,645.70 is: 27,123.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.20 : 41,964.34 = 19,645.70 : x
  2. Step 2: Convert to fraction form
    30,395.20/41,964.34 = 19,645.70/x
  3. Step 3: Cross multiply
    30,395.20x = 41,964.34 × 19,645.70
  4. Step 4: Simplify right side
    30,395.20x = 824,418,834.34
  5. Step 5: Solve for x
    x = 824,418,834.34/30,395.20
  6. Step 6: Final answer
    x = 27,123.32

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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.