Home / 12,539.13-18,809.90-4,221.24

Finding the Fourth Proportional to 12,539.13, 18,809.90 and 4,221.24

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Solution

The fourth proportional to 12,539.13, 18,809.90 and 4,221.24 is: 6,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.13 : 18,809.90 = 4,221.24 : x
  2. Step 2: Convert to fraction form
    12,539.13/18,809.90 = 4,221.24/x
  3. Step 3: Cross multiply
    12,539.13x = 18,809.90 × 4,221.24
  4. Step 4: Simplify right side
    12,539.13x = 79,401,102.28
  5. Step 5: Solve for x
    x = 79,401,102.28/12,539.13
  6. Step 6: Final answer
    x = 6,332.27

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1.5x scale

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.