Home / 15,638.44-21,580.25-8,563.50

Finding the Fourth Proportional to 15,638.44, 21,580.25 and 8,563.50

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Solution

The fourth proportional to 15,638.44, 21,580.25 and 8,563.50 is: 11,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.44 : 21,580.25 = 8,563.50 : x
  2. Step 2: Convert to fraction form
    15,638.44/21,580.25 = 8,563.50/x
  3. Step 3: Cross multiply
    15,638.44x = 21,580.25 × 8,563.50
  4. Step 4: Simplify right side
    15,638.44x = 184,802,470.88
  5. Step 5: Solve for x
    x = 184,802,470.88/15,638.44
  6. Step 6: Final answer
    x = 11,817.19

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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.