Home / 12,783.14-19,166.61-5,392.70

Finding the Fourth Proportional to 12,783.14, 19,166.61 and 5,392.70

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Solution

The fourth proportional to 12,783.14, 19,166.61 and 5,392.70 is: 8,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,783.14 : 19,166.61 = 5,392.70 : x
  2. Step 2: Convert to fraction form
    12,783.14/19,166.61 = 5,392.70/x
  3. Step 3: Cross multiply
    12,783.14x = 19,166.61 × 5,392.70
  4. Step 4: Simplify right side
    12,783.14x = 103,359,777.75
  5. Step 5: Solve for x
    x = 103,359,777.75/12,783.14
  6. Step 6: Final answer
    x = 8,085.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.