Home / 20,383.58-28,117.94-12,827.10

Finding the Fourth Proportional to 20,383.58, 28,117.94 and 12,827.10

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Solution

The fourth proportional to 20,383.58, 28,117.94 and 12,827.10 is: 17,694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.58 : 28,117.94 = 12,827.10 : x
  2. Step 2: Convert to fraction form
    20,383.58/28,117.94 = 12,827.10/x
  3. Step 3: Cross multiply
    20,383.58x = 28,117.94 × 12,827.10
  4. Step 4: Simplify right side
    20,383.58x = 360,671,628.17
  5. Step 5: Solve for x
    x = 360,671,628.17/20,383.58
  6. Step 6: Final answer
    x = 17,694.22

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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.