Home / 29,820.90-41,109.41-20,840.50

Finding the Fourth Proportional to 29,820.90, 41,109.41 and 20,840.50

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Solution

The fourth proportional to 29,820.90, 41,109.41 and 20,840.50 is: 28,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,820.90 : 41,109.41 = 20,840.50 : x
  2. Step 2: Convert to fraction form
    29,820.90/41,109.41 = 20,840.50/x
  3. Step 3: Cross multiply
    29,820.90x = 41,109.41 × 20,840.50
  4. Step 4: Simplify right side
    29,820.90x = 856,740,349.36
  5. Step 5: Solve for x
    x = 856,740,349.36/29,820.90
  6. Step 6: Final answer
    x = 28,729.53

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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.