Home / 13,318.96-18,378.12-7,653.91

Finding the Fourth Proportional to 13,318.96, 18,378.12 and 7,653.91

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Solution

The fourth proportional to 13,318.96, 18,378.12 and 7,653.91 is: 10,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.96 : 18,378.12 = 7,653.91 : x
  2. Step 2: Convert to fraction form
    13,318.96/18,378.12 = 7,653.91/x
  3. Step 3: Cross multiply
    13,318.96x = 18,378.12 × 7,653.91
  4. Step 4: Simplify right side
    13,318.96x = 140,664,476.45
  5. Step 5: Solve for x
    x = 140,664,476.45/13,318.96
  6. Step 6: Final answer
    x = 10,561.22

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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.