Home / 13,359.21-18,435.89-8,325.46

Finding the Fourth Proportional to 13,359.21, 18,435.89 and 8,325.46

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Solution

The fourth proportional to 13,359.21, 18,435.89 and 8,325.46 is: 11,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.21 : 18,435.89 = 8,325.46 : x
  2. Step 2: Convert to fraction form
    13,359.21/18,435.89 = 8,325.46/x
  3. Step 3: Cross multiply
    13,359.21x = 18,435.89 × 8,325.46
  4. Step 4: Simplify right side
    13,359.21x = 153,487,261.79
  5. Step 5: Solve for x
    x = 153,487,261.79/13,359.21
  6. Step 6: Final answer
    x = 11,489.25

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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.