Home / 30,533.38-42,135.33-17,105.20

Finding the Fourth Proportional to 30,533.38, 42,135.33 and 17,105.20

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Solution

The fourth proportional to 30,533.38, 42,135.33 and 17,105.20 is: 23,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,533.38 : 42,135.33 = 17,105.20 : x
  2. Step 2: Convert to fraction form
    30,533.38/42,135.33 = 17,105.20/x
  3. Step 3: Cross multiply
    30,533.38x = 42,135.33 × 17,105.20
  4. Step 4: Simplify right side
    30,533.38x = 720,733,246.72
  5. Step 5: Solve for x
    x = 720,733,246.72/30,533.38
  6. Step 6: Final answer
    x = 23,604.76

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Half scale
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Double scale
Find fourth proportional to 30,534.38, 42,136.71 and 17,106.20
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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.