Home / 18,571.16-27,853.76-5,420.45

Finding the Fourth Proportional to 18,571.16, 27,853.76 and 5,420.45

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Solution

The fourth proportional to 18,571.16, 27,853.76 and 5,420.45 is: 8,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.16 : 27,853.76 = 5,420.45 : x
  2. Step 2: Convert to fraction form
    18,571.16/27,853.76 = 5,420.45/x
  3. Step 3: Cross multiply
    18,571.16x = 27,853.76 × 5,420.45
  4. Step 4: Simplify right side
    18,571.16x = 150,979,886.29
  5. Step 5: Solve for x
    x = 150,979,886.29/18,571.16
  6. Step 6: Final answer
    x = 8,129.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.