Home / 19,255.89-28,890.99-11,774.81

Finding the Fourth Proportional to 19,255.89, 28,890.99 and 11,774.81

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Solution

The fourth proportional to 19,255.89, 28,890.99 and 11,774.81 is: 17,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255.89 : 28,890.99 = 11,774.81 : x
  2. Step 2: Convert to fraction form
    19,255.89/28,890.99 = 11,774.81/x
  3. Step 3: Cross multiply
    19,255.89x = 28,890.99 × 11,774.81
  4. Step 4: Simplify right side
    19,255.89x = 340,185,773.51
  5. Step 5: Solve for x
    x = 340,185,773.51/19,255.89
  6. Step 6: Final answer
    x = 17,666.58

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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.