Home / 18,911.55-26,109.20-16,809.60

Finding the Fourth Proportional to 18,911.55, 26,109.20 and 16,809.60

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Solution

The fourth proportional to 18,911.55, 26,109.20 and 16,809.60 is: 23,207.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.55 : 26,109.20 = 16,809.60 : x
  2. Step 2: Convert to fraction form
    18,911.55/26,109.20 = 16,809.60/x
  3. Step 3: Cross multiply
    18,911.55x = 26,109.20 × 16,809.60
  4. Step 4: Simplify right side
    18,911.55x = 438,885,124.27
  5. Step 5: Solve for x
    x = 438,885,124.27/18,911.55
  6. Step 6: Final answer
    x = 23,207.25

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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.