Home / 27,946.64-38,551.50-21,221.12

Finding the Fourth Proportional to 27,946.64, 38,551.50 and 21,221.12

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Solution

The fourth proportional to 27,946.64, 38,551.50 and 21,221.12 is: 29,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,946.64 : 38,551.50 = 21,221.12 : x
  2. Step 2: Convert to fraction form
    27,946.64/38,551.50 = 21,221.12/x
  3. Step 3: Cross multiply
    27,946.64x = 38,551.50 × 21,221.12
  4. Step 4: Simplify right side
    27,946.64x = 818,106,007.68
  5. Step 5: Solve for x
    x = 818,106,007.68/27,946.64
  6. Step 6: Final answer
    x = 29,273.86

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Double scale
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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.