Home / 27,748.73-38,285.86-15,811.81

Finding the Fourth Proportional to 27,748.73, 38,285.86 and 15,811.81

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Solution

The fourth proportional to 27,748.73, 38,285.86 and 15,811.81 is: 21,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.73 : 38,285.86 = 15,811.81 : x
  2. Step 2: Convert to fraction form
    27,748.73/38,285.86 = 15,811.81/x
  3. Step 3: Cross multiply
    27,748.73x = 38,285.86 × 15,811.81
  4. Step 4: Simplify right side
    27,748.73x = 605,368,744.01
  5. Step 5: Solve for x
    x = 605,368,744.01/27,748.73
  6. Step 6: Final answer
    x = 21,816.09

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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.