Home / 20,586.13-30,820.37-19,278.30

Finding the Fourth Proportional to 20,586.13, 30,820.37 and 19,278.30

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Solution

The fourth proportional to 20,586.13, 30,820.37 and 19,278.30 is: 28,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.13 : 30,820.37 = 19,278.30 : x
  2. Step 2: Convert to fraction form
    20,586.13/30,820.37 = 19,278.30/x
  3. Step 3: Cross multiply
    20,586.13x = 30,820.37 × 19,278.30
  4. Step 4: Simplify right side
    20,586.13x = 594,164,242.58
  5. Step 5: Solve for x
    x = 594,164,242.58/20,586.13
  6. Step 6: Final answer
    x = 28,862.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.