Home / 19,939.14-27,516.12-10,987.47

Finding the Fourth Proportional to 19,939.14, 27,516.12 and 10,987.47

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Solution

The fourth proportional to 19,939.14, 27,516.12 and 10,987.47 is: 15,162.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.14 : 27,516.12 = 10,987.47 : x
  2. Step 2: Convert to fraction form
    19,939.14/27,516.12 = 10,987.47/x
  3. Step 3: Cross multiply
    19,939.14x = 27,516.12 × 10,987.47
  4. Step 4: Simplify right side
    19,939.14x = 302,332,543.02
  5. Step 5: Solve for x
    x = 302,332,543.02/19,939.14
  6. Step 6: Final answer
    x = 15,162.77

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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.