Home / 20,238.40-30,154.12-19,106.63

Finding the Fourth Proportional to 20,238.40, 30,154.12 and 19,106.63

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Solution

The fourth proportional to 20,238.40, 30,154.12 and 19,106.63 is: 28,467.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.40 : 30,154.12 = 19,106.63 : x
  2. Step 2: Convert to fraction form
    20,238.40/30,154.12 = 19,106.63/x
  3. Step 3: Cross multiply
    20,238.40x = 30,154.12 × 19,106.63
  4. Step 4: Simplify right side
    20,238.40x = 576,143,379.45
  5. Step 5: Solve for x
    x = 576,143,379.45/20,238.40
  6. Step 6: Final answer
    x = 28,467.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.