Home / 13,218.24-19,822.77-5,318.40

Finding the Fourth Proportional to 13,218.24, 19,822.77 and 5,318.40

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Solution

The fourth proportional to 13,218.24, 19,822.77 and 5,318.40 is: 7,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.24 : 19,822.77 = 5,318.40 : x
  2. Step 2: Convert to fraction form
    13,218.24/19,822.77 = 5,318.40/x
  3. Step 3: Cross multiply
    13,218.24x = 19,822.77 × 5,318.40
  4. Step 4: Simplify right side
    13,218.24x = 105,425,419.97
  5. Step 5: Solve for x
    x = 105,425,419.97/13,218.24
  6. Step 6: Final answer
    x = 7,975.75

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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.