Home / 13,368.96-18,449.46-8,661.42

Finding the Fourth Proportional to 13,368.96, 18,449.46 and 8,661.42

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Solution

The fourth proportional to 13,368.96, 18,449.46 and 8,661.42 is: 11,952.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.96 : 18,449.46 = 8,661.42 : x
  2. Step 2: Convert to fraction form
    13,368.96/18,449.46 = 8,661.42/x
  3. Step 3: Cross multiply
    13,368.96x = 18,449.46 × 8,661.42
  4. Step 4: Simplify right side
    13,368.96x = 159,798,521.83
  5. Step 5: Solve for x
    x = 159,798,521.83/13,368.96
  6. Step 6: Final answer
    x = 11,952.95

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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.