Home / 13,169.16-18,171.70-8,459.84

Finding the Fourth Proportional to 13,169.16, 18,171.70 and 8,459.84

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Solution

The fourth proportional to 13,169.16, 18,171.70 and 8,459.84 is: 11,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.16 : 18,171.70 = 8,459.84 : x
  2. Step 2: Convert to fraction form
    13,169.16/18,171.70 = 8,459.84/x
  3. Step 3: Cross multiply
    13,169.16x = 18,171.70 × 8,459.84
  4. Step 4: Simplify right side
    13,169.16x = 153,729,674.53
  5. Step 5: Solve for x
    x = 153,729,674.53/13,169.16
  6. Step 6: Final answer
    x = 11,673.46

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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.