Home / 18,076.65-27,011.35-13,778.59

Finding the Fourth Proportional to 18,076.65, 27,011.35 and 13,778.59

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Solution

The fourth proportional to 18,076.65, 27,011.35 and 13,778.59 is: 20,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,076.65 : 27,011.35 = 13,778.59 : x
  2. Step 2: Convert to fraction form
    18,076.65/27,011.35 = 13,778.59/x
  3. Step 3: Cross multiply
    18,076.65x = 27,011.35 × 13,778.59
  4. Step 4: Simplify right side
    18,076.65x = 372,178,317.00
  5. Step 5: Solve for x
    x = 372,178,317.00/18,076.65
  6. Step 6: Final answer
    x = 20,588.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.