Home / 15,185.22-20,955.00-8,811.48

Finding the Fourth Proportional to 15,185.22, 20,955.00 and 8,811.48

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Solution

The fourth proportional to 15,185.22, 20,955.00 and 8,811.48 is: 12,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.22 : 20,955.00 = 8,811.48 : x
  2. Step 2: Convert to fraction form
    15,185.22/20,955.00 = 8,811.48/x
  3. Step 3: Cross multiply
    15,185.22x = 20,955.00 × 8,811.48
  4. Step 4: Simplify right side
    15,185.22x = 184,644,675.02
  5. Step 5: Solve for x
    x = 184,644,675.02/15,185.22
  6. Step 6: Final answer
    x = 12,159.50

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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.