Home / 19,289.40-26,619.54-11,331.78

Finding the Fourth Proportional to 19,289.40, 26,619.54 and 11,331.78

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Solution

The fourth proportional to 19,289.40, 26,619.54 and 11,331.78 is: 15,637.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.40 : 26,619.54 = 11,331.78 : x
  2. Step 2: Convert to fraction form
    19,289.40/26,619.54 = 11,331.78/x
  3. Step 3: Cross multiply
    19,289.40x = 26,619.54 × 11,331.78
  4. Step 4: Simplify right side
    19,289.40x = 301,646,770.98
  5. Step 5: Solve for x
    x = 301,646,770.98/19,289.40
  6. Step 6: Final answer
    x = 15,637.96

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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.