Home / 20,465.85-28,242.57-11,513.34

Finding the Fourth Proportional to 20,465.85, 28,242.57 and 11,513.34

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Solution

The fourth proportional to 20,465.85, 28,242.57 and 11,513.34 is: 15,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.85 : 28,242.57 = 11,513.34 : x
  2. Step 2: Convert to fraction form
    20,465.85/28,242.57 = 11,513.34/x
  3. Step 3: Cross multiply
    20,465.85x = 28,242.57 × 11,513.34
  4. Step 4: Simplify right side
    20,465.85x = 325,166,310.88
  5. Step 5: Solve for x
    x = 325,166,310.88/20,465.85
  6. Step 6: Final answer
    x = 15,888.24

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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.