Home / 27,951.37-38,572.56-20,813.21

Finding the Fourth Proportional to 27,951.37, 38,572.56 and 20,813.21

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Solution

The fourth proportional to 27,951.37, 38,572.56 and 20,813.21 is: 28,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,951.37 : 38,572.56 = 20,813.21 : x
  2. Step 2: Convert to fraction form
    27,951.37/38,572.56 = 20,813.21/x
  3. Step 3: Cross multiply
    27,951.37x = 38,572.56 × 20,813.21
  4. Step 4: Simplify right side
    27,951.37x = 802,818,743.30
  5. Step 5: Solve for x
    x = 802,818,743.30/27,951.37
  6. Step 6: Final answer
    x = 28,721.98

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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.