Home / 19,111.12-28,676.28-11,319.76

Finding the Fourth Proportional to 19,111.12, 28,676.28 and 11,319.76

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Solution

The fourth proportional to 19,111.12, 28,676.28 and 11,319.76 is: 16,985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.12 : 28,676.28 = 11,319.76 : x
  2. Step 2: Convert to fraction form
    19,111.12/28,676.28 = 11,319.76/x
  3. Step 3: Cross multiply
    19,111.12x = 28,676.28 × 11,319.76
  4. Step 4: Simplify right side
    19,111.12x = 324,608,607.29
  5. Step 5: Solve for x
    x = 324,608,607.29/19,111.12
  6. Step 6: Final answer
    x = 16,985.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.