Home / 19,320.46-28,991.65-8,225.99

Finding the Fourth Proportional to 19,320.46, 28,991.65 and 8,225.99

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Solution

The fourth proportional to 19,320.46, 28,991.65 and 8,225.99 is: 12,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.46 : 28,991.65 = 8,225.99 : x
  2. Step 2: Convert to fraction form
    19,320.46/28,991.65 = 8,225.99/x
  3. Step 3: Cross multiply
    19,320.46x = 28,991.65 × 8,225.99
  4. Step 4: Simplify right side
    19,320.46x = 238,485,022.98
  5. Step 5: Solve for x
    x = 238,485,022.98/19,320.46
  6. Step 6: Final answer
    x = 12,343.65

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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.