Home / 15,511.85-23,271.86-8,114.32

Finding the Fourth Proportional to 15,511.85, 23,271.86 and 8,114.32

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Solution

The fourth proportional to 15,511.85, 23,271.86 and 8,114.32 is: 12,173.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.85 : 23,271.86 = 8,114.32 : x
  2. Step 2: Convert to fraction form
    15,511.85/23,271.86 = 8,114.32/x
  3. Step 3: Cross multiply
    15,511.85x = 23,271.86 × 8,114.32
  4. Step 4: Simplify right side
    15,511.85x = 188,835,281.14
  5. Step 5: Solve for x
    x = 188,835,281.14/15,511.85
  6. Step 6: Final answer
    x = 12,173.62

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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.