Home / 20,701.50-28,587.51-14,431.26

Finding the Fourth Proportional to 20,701.50, 28,587.51 and 14,431.26

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Solution

The fourth proportional to 20,701.50, 28,587.51 and 14,431.26 is: 19,928.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.50 : 28,587.51 = 14,431.26 : x
  2. Step 2: Convert to fraction form
    20,701.50/28,587.51 = 14,431.26/x
  3. Step 3: Cross multiply
    20,701.50x = 28,587.51 × 14,431.26
  4. Step 4: Simplify right side
    20,701.50x = 412,553,789.56
  5. Step 5: Solve for x
    x = 412,553,789.56/20,701.50
  6. Step 6: Final answer
    x = 19,928.69

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Double scale
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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.