Home / 19,163.85-28,752.59-7,318.50

Finding the Fourth Proportional to 19,163.85, 28,752.59 and 7,318.50

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Solution

The fourth proportional to 19,163.85, 28,752.59 and 7,318.50 is: 10,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,163.85 : 28,752.59 = 7,318.50 : x
  2. Step 2: Convert to fraction form
    19,163.85/28,752.59 = 7,318.50/x
  3. Step 3: Cross multiply
    19,163.85x = 28,752.59 × 7,318.50
  4. Step 4: Simplify right side
    19,163.85x = 210,425,829.92
  5. Step 5: Solve for x
    x = 210,425,829.92/19,163.85
  6. Step 6: Final answer
    x = 10,980.35

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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.