Home / 20,698.89-28,565.03-11,267.85

Finding the Fourth Proportional to 20,698.89, 28,565.03 and 11,267.85

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Solution

The fourth proportional to 20,698.89, 28,565.03 and 11,267.85 is: 15,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.89 : 28,565.03 = 11,267.85 : x
  2. Step 2: Convert to fraction form
    20,698.89/28,565.03 = 11,267.85/x
  3. Step 3: Cross multiply
    20,698.89x = 28,565.03 × 11,267.85
  4. Step 4: Simplify right side
    20,698.89x = 321,866,416.95
  5. Step 5: Solve for x
    x = 321,866,416.95/20,698.89
  6. Step 6: Final answer
    x = 15,549.94

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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.