Home / 18,572.16-27,855.25-5,421.45

Finding the Fourth Proportional to 18,572.16, 27,855.25 and 5,421.45

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Solution

The fourth proportional to 18,572.16, 27,855.25 and 5,421.45 is: 8,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.16 : 27,855.25 = 5,421.45 : x
  2. Step 2: Convert to fraction form
    18,572.16/27,855.25 = 5,421.45/x
  3. Step 3: Cross multiply
    18,572.16x = 27,855.25 × 5,421.45
  4. Step 4: Simplify right side
    18,572.16x = 151,015,845.11
  5. Step 5: Solve for x
    x = 151,015,845.11/18,572.16
  6. Step 6: Final answer
    x = 8,131.30

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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.