Home / 13,318.12-19,965.52-4,995.87

Finding the Fourth Proportional to 13,318.12, 19,965.52 and 4,995.87

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Solution

The fourth proportional to 13,318.12, 19,965.52 and 4,995.87 is: 7,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.12 : 19,965.52 = 4,995.87 : x
  2. Step 2: Convert to fraction form
    13,318.12/19,965.52 = 4,995.87/x
  3. Step 3: Cross multiply
    13,318.12x = 19,965.52 × 4,995.87
  4. Step 4: Simplify right side
    13,318.12x = 99,745,142.40
  5. Step 5: Solve for x
    x = 99,745,142.40/13,318.12
  6. Step 6: Final answer
    x = 7,489.43

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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.