Home / 27,889.20-38,486.88-15,313.92

Finding the Fourth Proportional to 27,889.20, 38,486.88 and 15,313.92

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Solution

The fourth proportional to 27,889.20, 38,486.88 and 15,313.92 is: 21,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,889.20 : 38,486.88 = 15,313.92 : x
  2. Step 2: Convert to fraction form
    27,889.20/38,486.88 = 15,313.92/x
  3. Step 3: Cross multiply
    27,889.20x = 38,486.88 × 15,313.92
  4. Step 4: Simplify right side
    27,889.20x = 589,385,001.37
  5. Step 5: Solve for x
    x = 589,385,001.37/27,889.20
  6. Step 6: Final answer
    x = 21,133.09

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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.