Home / 27,917.37-38,530.53-21,553.20

Finding the Fourth Proportional to 27,917.37, 38,530.53 and 21,553.20

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Solution

The fourth proportional to 27,917.37, 38,530.53 and 21,553.20 is: 29,746.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,917.37 : 38,530.53 = 21,553.20 : x
  2. Step 2: Convert to fraction form
    27,917.37/38,530.53 = 21,553.20/x
  3. Step 3: Cross multiply
    27,917.37x = 38,530.53 × 21,553.20
  4. Step 4: Simplify right side
    27,917.37x = 830,456,219.20
  5. Step 5: Solve for x
    x = 830,456,219.20/27,917.37
  6. Step 6: Final answer
    x = 29,746.94

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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.