Home / 20,828.06-28,746.22-16,385.72

Finding the Fourth Proportional to 20,828.06, 28,746.22 and 16,385.72

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Solution

The fourth proportional to 20,828.06, 28,746.22 and 16,385.72 is: 22,615.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.06 : 28,746.22 = 16,385.72 : x
  2. Step 2: Convert to fraction form
    20,828.06/28,746.22 = 16,385.72/x
  3. Step 3: Cross multiply
    20,828.06x = 28,746.22 × 16,385.72
  4. Step 4: Simplify right side
    20,828.06x = 471,027,511.98
  5. Step 5: Solve for x
    x = 471,027,511.98/20,828.06
  6. Step 6: Final answer
    x = 22,615.04

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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.