Home / 19,386.35-26,717.91-15,135.20

Finding the Fourth Proportional to 19,386.35, 26,717.91 and 15,135.20

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Solution

The fourth proportional to 19,386.35, 26,717.91 and 15,135.20 is: 20,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.35 : 26,717.91 = 15,135.20 : x
  2. Step 2: Convert to fraction form
    19,386.35/26,717.91 = 15,135.20/x
  3. Step 3: Cross multiply
    19,386.35x = 26,717.91 × 15,135.20
  4. Step 4: Simplify right side
    19,386.35x = 404,380,911.43
  5. Step 5: Solve for x
    x = 404,380,911.43/19,386.35
  6. Step 6: Final answer
    x = 20,859.05

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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.