Home / 20,621.10-30,925.48-10,755

Finding the Fourth Proportional to 20,621.10, 30,925.48 and 10,755

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Solution

The fourth proportional to 20,621.10, 30,925.48 and 10,755 is: 16,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.10 : 30,925.48 = 10,755 : x
  2. Step 2: Convert to fraction form
    20,621.10/30,925.48 = 10,755/x
  3. Step 3: Cross multiply
    20,621.10x = 30,925.48 × 10,755
  4. Step 4: Simplify right side
    20,621.10x = 332,603,483.63
  5. Step 5: Solve for x
    x = 332,603,483.63/20,621.10
  6. Step 6: Final answer
    x = 16,129.28

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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.