Home / 18,403.34-25,393.11-11,690.06

Finding the Fourth Proportional to 18,403.34, 25,393.11 and 11,690.06

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Solution

The fourth proportional to 18,403.34, 25,393.11 and 11,690.06 is: 16,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.34 : 25,393.11 = 11,690.06 : x
  2. Step 2: Convert to fraction form
    18,403.34/25,393.11 = 11,690.06/x
  3. Step 3: Cross multiply
    18,403.34x = 25,393.11 × 11,690.06
  4. Step 4: Simplify right side
    18,403.34x = 296,846,979.49
  5. Step 5: Solve for x
    x = 296,846,979.49/18,403.34
  6. Step 6: Final answer
    x = 16,130.06

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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.