Home / 19,989.38-27,587.77-11,605.88

Finding the Fourth Proportional to 19,989.38, 27,587.77 and 11,605.88

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Solution

The fourth proportional to 19,989.38, 27,587.77 and 11,605.88 is: 16,017.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.38 : 27,587.77 = 11,605.88 : x
  2. Step 2: Convert to fraction form
    19,989.38/27,587.77 = 11,605.88/x
  3. Step 3: Cross multiply
    19,989.38x = 27,587.77 × 11,605.88
  4. Step 4: Simplify right side
    19,989.38x = 320,180,181.13
  5. Step 5: Solve for x
    x = 320,180,181.13/19,989.38
  6. Step 6: Final answer
    x = 16,017.52

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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.