Home / 20,852.39-28,774.13-11,898.16

Finding the Fourth Proportional to 20,852.39, 28,774.13 and 11,898.16

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Solution

The fourth proportional to 20,852.39, 28,774.13 and 11,898.16 is: 16,418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.39 : 28,774.13 = 11,898.16 : x
  2. Step 2: Convert to fraction form
    20,852.39/28,774.13 = 11,898.16/x
  3. Step 3: Cross multiply
    20,852.39x = 28,774.13 × 11,898.16
  4. Step 4: Simplify right side
    20,852.39x = 342,359,202.60
  5. Step 5: Solve for x
    x = 342,359,202.60/20,852.39
  6. Step 6: Final answer
    x = 16,418.22

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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.