Home / 20,650.94-28,498.30-11,219.50

Finding the Fourth Proportional to 20,650.94, 28,498.30 and 11,219.50

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Solution

The fourth proportional to 20,650.94, 28,498.30 and 11,219.50 is: 15,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.94 : 28,498.30 = 11,219.50 : x
  2. Step 2: Convert to fraction form
    20,650.94/28,498.30 = 11,219.50/x
  3. Step 3: Cross multiply
    20,650.94x = 28,498.30 × 11,219.50
  4. Step 4: Simplify right side
    20,650.94x = 319,736,620.75
  5. Step 5: Solve for x
    x = 319,736,620.75/20,650.94
  6. Step 6: Final answer
    x = 15,482.91

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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.