Home / 30,718.86-42,396.11-17,292.76

Finding the Fourth Proportional to 30,718.86, 42,396.11 and 17,292.76

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Solution

The fourth proportional to 30,718.86, 42,396.11 and 17,292.76 is: 23,866.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.86 : 42,396.11 = 17,292.76 : x
  2. Step 2: Convert to fraction form
    30,718.86/42,396.11 = 17,292.76/x
  3. Step 3: Cross multiply
    30,718.86x = 42,396.11 × 17,292.76
  4. Step 4: Simplify right side
    30,718.86x = 733,145,627.56
  5. Step 5: Solve for x
    x = 733,145,627.56/30,718.86
  6. Step 6: Final answer
    x = 23,866.30

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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.