Home / 27,388.92-37,821.66-20,663.04

Finding the Fourth Proportional to 27,388.92, 37,821.66 and 20,663.04

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Solution

The fourth proportional to 27,388.92, 37,821.66 and 20,663.04 is: 28,533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,388.92 : 37,821.66 = 20,663.04 : x
  2. Step 2: Convert to fraction form
    27,388.92/37,821.66 = 20,663.04/x
  3. Step 3: Cross multiply
    27,388.92x = 37,821.66 × 20,663.04
  4. Step 4: Simplify right side
    27,388.92x = 781,510,473.45
  5. Step 5: Solve for x
    x = 781,510,473.45/27,388.92
  6. Step 6: Final answer
    x = 28,533.82

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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.