Home / 27,516.72-37,990.44-20,434.80

Finding the Fourth Proportional to 27,516.72, 37,990.44 and 20,434.80

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Solution

The fourth proportional to 27,516.72, 37,990.44 and 20,434.80 is: 28,212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,516.72 : 37,990.44 = 20,434.80 : x
  2. Step 2: Convert to fraction form
    27,516.72/37,990.44 = 20,434.80/x
  3. Step 3: Cross multiply
    27,516.72x = 37,990.44 × 20,434.80
  4. Step 4: Simplify right side
    27,516.72x = 776,327,043.31
  5. Step 5: Solve for x
    x = 776,327,043.31/27,516.72
  6. Step 6: Final answer
    x = 28,212.92

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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.