Home / 20,731.73-28,587.19-14,005.68

Finding the Fourth Proportional to 20,731.73, 28,587.19 and 14,005.68

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Solution

The fourth proportional to 20,731.73, 28,587.19 and 14,005.68 is: 19,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.73 : 28,587.19 = 14,005.68 : x
  2. Step 2: Convert to fraction form
    20,731.73/28,587.19 = 14,005.68/x
  3. Step 3: Cross multiply
    20,731.73x = 28,587.19 × 14,005.68
  4. Step 4: Simplify right side
    20,731.73x = 400,383,035.24
  5. Step 5: Solve for x
    x = 400,383,035.24/20,731.73
  6. Step 6: Final answer
    x = 19,312.57

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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.