Home / 13,318.32-19,958.44-9,780.57

Finding the Fourth Proportional to 13,318.32, 19,958.44 and 9,780.57

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Solution

The fourth proportional to 13,318.32, 19,958.44 and 9,780.57 is: 14,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.32 : 19,958.44 = 9,780.57 : x
  2. Step 2: Convert to fraction form
    13,318.32/19,958.44 = 9,780.57/x
  3. Step 3: Cross multiply
    13,318.32x = 19,958.44 × 9,780.57
  4. Step 4: Simplify right side
    13,318.32x = 195,204,919.51
  5. Step 5: Solve for x
    x = 195,204,919.51/13,318.32
  6. Step 6: Final answer
    x = 14,656.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.