Home / 20,994.76-28,950.91-16,215.49

Finding the Fourth Proportional to 20,994.76, 28,950.91 and 16,215.49

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Solution

The fourth proportional to 20,994.76, 28,950.91 and 16,215.49 is: 22,360.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.76 : 28,950.91 = 16,215.49 : x
  2. Step 2: Convert to fraction form
    20,994.76/28,950.91 = 16,215.49/x
  3. Step 3: Cross multiply
    20,994.76x = 28,950.91 × 16,215.49
  4. Step 4: Simplify right side
    20,994.76x = 469,453,191.60
  5. Step 5: Solve for x
    x = 469,453,191.60/20,994.76
  6. Step 6: Final answer
    x = 22,360.49

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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.