Home / 13,486.89-18,604.31-8,510.25

Finding the Fourth Proportional to 13,486.89, 18,604.31 and 8,510.25

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Solution

The fourth proportional to 13,486.89, 18,604.31 and 8,510.25 is: 11,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.89 : 18,604.31 = 8,510.25 : x
  2. Step 2: Convert to fraction form
    13,486.89/18,604.31 = 8,510.25/x
  3. Step 3: Cross multiply
    13,486.89x = 18,604.31 × 8,510.25
  4. Step 4: Simplify right side
    13,486.89x = 158,327,286.63
  5. Step 5: Solve for x
    x = 158,327,286.63/13,486.89
  6. Step 6: Final answer
    x = 11,739.35

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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.