Home / 13,399.10-18,469.45-10,561.87

Finding the Fourth Proportional to 13,399.10, 18,469.45 and 10,561.87

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Solution

The fourth proportional to 13,399.10, 18,469.45 and 10,561.87 is: 14,558.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.10 : 18,469.45 = 10,561.87 : x
  2. Step 2: Convert to fraction form
    13,399.10/18,469.45 = 10,561.87/x
  3. Step 3: Cross multiply
    13,399.10x = 18,469.45 × 10,561.87
  4. Step 4: Simplify right side
    13,399.10x = 195,071,929.87
  5. Step 5: Solve for x
    x = 195,071,929.87/13,399.10
  6. Step 6: Final answer
    x = 14,558.58

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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.