Home / 19,311.04-28,964.16-8,209.44

Finding the Fourth Proportional to 19,311.04, 28,964.16 and 8,209.44

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Solution

The fourth proportional to 19,311.04, 28,964.16 and 8,209.44 is: 12,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.04 : 28,964.16 = 8,209.44 : x
  2. Step 2: Convert to fraction form
    19,311.04/28,964.16 = 8,209.44/x
  3. Step 3: Cross multiply
    19,311.04x = 28,964.16 × 8,209.44
  4. Step 4: Simplify right side
    19,311.04x = 237,779,533.67
  5. Step 5: Solve for x
    x = 237,779,533.67/19,311.04
  6. Step 6: Final answer
    x = 12,313.14

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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.