Home / 15,289.20-22,985.64-12,208.56

Finding the Fourth Proportional to 15,289.20, 22,985.64 and 12,208.56

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Solution

The fourth proportional to 15,289.20, 22,985.64 and 12,208.56 is: 18,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.20 : 22,985.64 = 12,208.56 : x
  2. Step 2: Convert to fraction form
    15,289.20/22,985.64 = 12,208.56/x
  3. Step 3: Cross multiply
    15,289.20x = 22,985.64 × 12,208.56
  4. Step 4: Simplify right side
    15,289.20x = 280,621,565.08
  5. Step 5: Solve for x
    x = 280,621,565.08/15,289.20
  6. Step 6: Final answer
    x = 18,354.23

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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.