Home / 19,939.88-27,516.88-10,987.18

Finding the Fourth Proportional to 19,939.88, 27,516.88 and 10,987.18

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Solution

The fourth proportional to 19,939.88, 27,516.88 and 10,987.18 is: 15,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.88 : 27,516.88 = 10,987.18 : x
  2. Step 2: Convert to fraction form
    19,939.88/27,516.88 = 10,987.18/x
  3. Step 3: Cross multiply
    19,939.88x = 27,516.88 × 10,987.18
  4. Step 4: Simplify right side
    19,939.88x = 302,332,913.60
  5. Step 5: Solve for x
    x = 302,332,913.60/19,939.88
  6. Step 6: Final answer
    x = 15,162.22

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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.