Home / 19,939.60-27,516.28-10,987.92

Finding the Fourth Proportional to 19,939.60, 27,516.28 and 10,987.92

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Solution

The fourth proportional to 19,939.60, 27,516.28 and 10,987.92 is: 15,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.60 : 27,516.28 = 10,987.92 : x
  2. Step 2: Convert to fraction form
    19,939.60/27,516.28 = 10,987.92/x
  3. Step 3: Cross multiply
    19,939.60x = 27,516.28 × 10,987.92
  4. Step 4: Simplify right side
    19,939.60x = 302,346,683.34
  5. Step 5: Solve for x
    x = 302,346,683.34/19,939.60
  6. Step 6: Final answer
    x = 15,163.13

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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.