Home / 30,570.03-42,190.01-17,142.57

Finding the Fourth Proportional to 30,570.03, 42,190.01 and 17,142.57

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Solution

The fourth proportional to 30,570.03, 42,190.01 and 17,142.57 is: 23,658.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.03 : 42,190.01 = 17,142.57 : x
  2. Step 2: Convert to fraction form
    30,570.03/42,190.01 = 17,142.57/x
  3. Step 3: Cross multiply
    30,570.03x = 42,190.01 × 17,142.57
  4. Step 4: Simplify right side
    30,570.03x = 723,245,114.01
  5. Step 5: Solve for x
    x = 723,245,114.01/30,570.03
  6. Step 6: Final answer
    x = 23,658.63

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Double scale
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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.