Home / 39,997.20-59,956-18,899.88

Finding the Fourth Proportional to 39,997.20, 59,956 and 18,899.88

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Solution

The fourth proportional to 39,997.20, 59,956 and 18,899.88 is: 28,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,997.20 : 59,956 = 18,899.88 : x
  2. Step 2: Convert to fraction form
    39,997.20/59,956 = 18,899.88/x
  3. Step 3: Cross multiply
    39,997.20x = 59,956 × 18,899.88
  4. Step 4: Simplify right side
    39,997.20x = 1,133,161,205.28
  5. Step 5: Solve for x
    x = 1,133,161,205.28/39,997.20
  6. Step 6: Final answer
    x = 28,331.01

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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.