Home / 19,939.71-27,516.78-10,987.18

Finding the Fourth Proportional to 19,939.71, 27,516.78 and 10,987.18

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Solution

The fourth proportional to 19,939.71, 27,516.78 and 10,987.18 is: 15,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.71 : 27,516.78 = 10,987.18 : x
  2. Step 2: Convert to fraction form
    19,939.71/27,516.78 = 10,987.18/x
  3. Step 3: Cross multiply
    19,939.71x = 27,516.78 × 10,987.18
  4. Step 4: Simplify right side
    19,939.71x = 302,331,814.88
  5. Step 5: Solve for x
    x = 302,331,814.88/19,939.71
  6. Step 6: Final answer
    x = 15,162.30

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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.