Home / 19,939.10-27,515.97-10,986.98

Finding the Fourth Proportional to 19,939.10, 27,515.97 and 10,986.98

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Solution

The fourth proportional to 19,939.10, 27,515.97 and 10,986.98 is: 15,162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.10 : 27,515.97 = 10,986.98 : x
  2. Step 2: Convert to fraction form
    19,939.10/27,515.97 = 10,986.98/x
  3. Step 3: Cross multiply
    19,939.10x = 27,515.97 × 10,986.98
  4. Step 4: Simplify right side
    19,939.10x = 302,317,274.49
  5. Step 5: Solve for x
    x = 302,317,274.49/19,939.10
  6. Step 6: Final answer
    x = 15,162.04

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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.