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Finding the Fourth Proportional to 19,170.12, 26,450.80 and 11,210.80

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Solution

The fourth proportional to 19,170.12, 26,450.80 and 11,210.80 is: 15,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,170.12 : 26,450.80 = 11,210.80 : x
  2. Step 2: Convert to fraction form
    19,170.12/26,450.80 = 11,210.80/x
  3. Step 3: Cross multiply
    19,170.12x = 26,450.80 × 11,210.80
  4. Step 4: Simplify right side
    19,170.12x = 296,534,628.64
  5. Step 5: Solve for x
    x = 296,534,628.64/19,170.12
  6. Step 6: Final answer
    x = 15,468.58

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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.