Home / 57,872.42-86,815-18,420.30

Finding the Fourth Proportional to 57,872.42, 86,815 and 18,420.30

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Solution

The fourth proportional to 57,872.42, 86,815 and 18,420.30 is: 27,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,872.42 : 86,815 = 18,420.30 : x
  2. Step 2: Convert to fraction form
    57,872.42/86,815 = 18,420.30/x
  3. Step 3: Cross multiply
    57,872.42x = 86,815 × 18,420.30
  4. Step 4: Simplify right side
    57,872.42x = 1,599,158,344.50
  5. Step 5: Solve for x
    x = 1,599,158,344.50/57,872.42
  6. Step 6: Final answer
    x = 27,632.48

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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.