Home / 19,883.16-27,438.81-11,385.41

Finding the Fourth Proportional to 19,883.16, 27,438.81 and 11,385.41

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Solution

The fourth proportional to 19,883.16, 27,438.81 and 11,385.41 is: 15,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.16 : 27,438.81 = 11,385.41 : x
  2. Step 2: Convert to fraction form
    19,883.16/27,438.81 = 11,385.41/x
  3. Step 3: Cross multiply
    19,883.16x = 27,438.81 × 11,385.41
  4. Step 4: Simplify right side
    19,883.16x = 312,401,964.57
  5. Step 5: Solve for x
    x = 312,401,964.57/19,883.16
  6. Step 6: Final answer
    x = 15,711.89

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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.