Home / 19,853.32-27,391.94-12,783.84

Finding the Fourth Proportional to 19,853.32, 27,391.94 and 12,783.84

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Solution

The fourth proportional to 19,853.32, 27,391.94 and 12,783.84 is: 17,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,853.32 : 27,391.94 = 12,783.84 : x
  2. Step 2: Convert to fraction form
    19,853.32/27,391.94 = 12,783.84/x
  3. Step 3: Cross multiply
    19,853.32x = 27,391.94 × 12,783.84
  4. Step 4: Simplify right side
    19,853.32x = 350,174,178.25
  5. Step 5: Solve for x
    x = 350,174,178.25/19,853.32
  6. Step 6: Final answer
    x = 17,638.07

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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.