Home / 12,961.56-19,341.20-11,565.28

Finding the Fourth Proportional to 12,961.56, 19,341.20 and 11,565.28

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Solution

The fourth proportional to 12,961.56, 19,341.20 and 11,565.28 is: 17,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.56 : 19,341.20 = 11,565.28 : x
  2. Step 2: Convert to fraction form
    12,961.56/19,341.20 = 11,565.28/x
  3. Step 3: Cross multiply
    12,961.56x = 19,341.20 × 11,565.28
  4. Step 4: Simplify right side
    12,961.56x = 223,686,393.54
  5. Step 5: Solve for x
    x = 223,686,393.54/12,961.56
  6. Step 6: Final answer
    x = 17,257.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.