Home / 20,155.33-27,806.60-12,984.71

Finding the Fourth Proportional to 20,155.33, 27,806.60 and 12,984.71

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Solution

The fourth proportional to 20,155.33, 27,806.60 and 12,984.71 is: 17,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.33 : 27,806.60 = 12,984.71 : x
  2. Step 2: Convert to fraction form
    20,155.33/27,806.60 = 12,984.71/x
  3. Step 3: Cross multiply
    20,155.33x = 27,806.60 × 12,984.71
  4. Step 4: Simplify right side
    20,155.33x = 361,060,530.51
  5. Step 5: Solve for x
    x = 361,060,530.51/20,155.33
  6. Step 6: Final answer
    x = 17,913.90

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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.