Home / 18,709.19-28,068.41-5,561.50

Finding the Fourth Proportional to 18,709.19, 28,068.41 and 5,561.50

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Solution

The fourth proportional to 18,709.19, 28,068.41 and 5,561.50 is: 8,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.19 : 28,068.41 = 5,561.50 : x
  2. Step 2: Convert to fraction form
    18,709.19/28,068.41 = 5,561.50/x
  3. Step 3: Cross multiply
    18,709.19x = 28,068.41 × 5,561.50
  4. Step 4: Simplify right side
    18,709.19x = 156,102,462.22
  5. Step 5: Solve for x
    x = 156,102,462.22/18,709.19
  6. Step 6: Final answer
    x = 8,343.62

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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.