Home / 19,215.72-26,513.18-11,661.88

Finding the Fourth Proportional to 19,215.72, 26,513.18 and 11,661.88

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Solution

The fourth proportional to 19,215.72, 26,513.18 and 11,661.88 is: 16,090.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.72 : 26,513.18 = 11,661.88 : x
  2. Step 2: Convert to fraction form
    19,215.72/26,513.18 = 11,661.88/x
  3. Step 3: Cross multiply
    19,215.72x = 26,513.18 × 11,661.88
  4. Step 4: Simplify right side
    19,215.72x = 309,193,523.58
  5. Step 5: Solve for x
    x = 309,193,523.58/19,215.72
  6. Step 6: Final answer
    x = 16,090.66

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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.