Home / 27,100.72-37,411.76-20,388.92

Finding the Fourth Proportional to 27,100.72, 37,411.76 and 20,388.92

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Solution

The fourth proportional to 27,100.72, 37,411.76 and 20,388.92 is: 28,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,100.72 : 37,411.76 = 20,388.92 : x
  2. Step 2: Convert to fraction form
    27,100.72/37,411.76 = 20,388.92/x
  3. Step 3: Cross multiply
    27,100.72x = 37,411.76 × 20,388.92
  4. Step 4: Simplify right side
    27,100.72x = 762,785,381.70
  5. Step 5: Solve for x
    x = 762,785,381.70/27,100.72
  6. Step 6: Final answer
    x = 28,146.31

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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.