Home / 18,965.60-26,168.34-11,003.21

Finding the Fourth Proportional to 18,965.60, 26,168.34 and 11,003.21

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Solution

The fourth proportional to 18,965.60, 26,168.34 and 11,003.21 is: 15,182.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.60 : 26,168.34 = 11,003.21 : x
  2. Step 2: Convert to fraction form
    18,965.60/26,168.34 = 11,003.21/x
  3. Step 3: Cross multiply
    18,965.60x = 26,168.34 × 11,003.21
  4. Step 4: Simplify right side
    18,965.60x = 287,935,740.37
  5. Step 5: Solve for x
    x = 287,935,740.37/18,965.60
  6. Step 6: Final answer
    x = 15,182.00

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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.