Home / 20,910.02-28,846.21-13,352.57

Finding the Fourth Proportional to 20,910.02, 28,846.21 and 13,352.57

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Solution

The fourth proportional to 20,910.02, 28,846.21 and 13,352.57 is: 18,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.02 : 28,846.21 = 13,352.57 : x
  2. Step 2: Convert to fraction form
    20,910.02/28,846.21 = 13,352.57/x
  3. Step 3: Cross multiply
    20,910.02x = 28,846.21 × 13,352.57
  4. Step 4: Simplify right side
    20,910.02x = 385,170,997.87
  5. Step 5: Solve for x
    x = 385,170,997.87/20,910.02
  6. Step 6: Final answer
    x = 18,420.40

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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.