Home / 13,361.12-18,439.80-8,586.20

Finding the Fourth Proportional to 13,361.12, 18,439.80 and 8,586.20

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Solution

The fourth proportional to 13,361.12, 18,439.80 and 8,586.20 is: 11,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.12 : 18,439.80 = 8,586.20 : x
  2. Step 2: Convert to fraction form
    13,361.12/18,439.80 = 8,586.20/x
  3. Step 3: Cross multiply
    13,361.12x = 18,439.80 × 8,586.20
  4. Step 4: Simplify right side
    13,361.12x = 158,327,810.76
  5. Step 5: Solve for x
    x = 158,327,810.76/13,361.12
  6. Step 6: Final answer
    x = 11,849.89

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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.