Home / 20,773.90-28,669.08-11,342.50

Finding the Fourth Proportional to 20,773.90, 28,669.08 and 11,342.50

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Solution

The fourth proportional to 20,773.90, 28,669.08 and 11,342.50 is: 15,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.90 : 28,669.08 = 11,342.50 : x
  2. Step 2: Convert to fraction form
    20,773.90/28,669.08 = 11,342.50/x
  3. Step 3: Cross multiply
    20,773.90x = 28,669.08 × 11,342.50
  4. Step 4: Simplify right side
    20,773.90x = 325,179,039.90
  5. Step 5: Solve for x
    x = 325,179,039.90/20,773.90
  6. Step 6: Final answer
    x = 15,653.25

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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.