Home / 13,896.60-20,820.65-11,571.56

Finding the Fourth Proportional to 13,896.60, 20,820.65 and 11,571.56

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Solution

The fourth proportional to 13,896.60, 20,820.65 and 11,571.56 is: 17,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.60 : 20,820.65 = 11,571.56 : x
  2. Step 2: Convert to fraction form
    13,896.60/20,820.65 = 11,571.56/x
  3. Step 3: Cross multiply
    13,896.60x = 20,820.65 × 11,571.56
  4. Step 4: Simplify right side
    13,896.60x = 240,927,316.83
  5. Step 5: Solve for x
    x = 240,927,316.83/13,896.60
  6. Step 6: Final answer
    x = 17,337.15

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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.