Home / 19,868.16-27,416.70-11,906.40

Finding the Fourth Proportional to 19,868.16, 27,416.70 and 11,906.40

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Solution

The fourth proportional to 19,868.16, 27,416.70 and 11,906.40 is: 16,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.16 : 27,416.70 = 11,906.40 : x
  2. Step 2: Convert to fraction form
    19,868.16/27,416.70 = 11,906.40/x
  3. Step 3: Cross multiply
    19,868.16x = 27,416.70 × 11,906.40
  4. Step 4: Simplify right side
    19,868.16x = 326,434,196.88
  5. Step 5: Solve for x
    x = 326,434,196.88/19,868.16
  6. Step 6: Final answer
    x = 16,430.02

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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.