Home / 19,857.24-27,409.14-12,783.67

Finding the Fourth Proportional to 19,857.24, 27,409.14 and 12,783.67

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Solution

The fourth proportional to 19,857.24, 27,409.14 and 12,783.67 is: 17,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.24 : 27,409.14 = 12,783.67 : x
  2. Step 2: Convert to fraction form
    19,857.24/27,409.14 = 12,783.67/x
  3. Step 3: Cross multiply
    19,857.24x = 27,409.14 × 12,783.67
  4. Step 4: Simplify right side
    19,857.24x = 350,389,332.22
  5. Step 5: Solve for x
    x = 350,389,332.22/19,857.24
  6. Step 6: Final answer
    x = 17,645.42

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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.