Home / 20,650.88-28,498.14-11,219.36

Finding the Fourth Proportional to 20,650.88, 28,498.14 and 11,219.36

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Solution

The fourth proportional to 20,650.88, 28,498.14 and 11,219.36 is: 15,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.88 : 28,498.14 = 11,219.36 : x
  2. Step 2: Convert to fraction form
    20,650.88/28,498.14 = 11,219.36/x
  3. Step 3: Cross multiply
    20,650.88x = 28,498.14 × 11,219.36
  4. Step 4: Simplify right side
    20,650.88x = 319,730,891.99
  5. Step 5: Solve for x
    x = 319,730,891.99/20,650.88
  6. Step 6: Final answer
    x = 15,482.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.