Home / 19,128.96-28,684.08-11,335.68

Finding the Fourth Proportional to 19,128.96, 28,684.08 and 11,335.68

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Solution

The fourth proportional to 19,128.96, 28,684.08 and 11,335.68 is: 16,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.96 : 28,684.08 = 11,335.68 : x
  2. Step 2: Convert to fraction form
    19,128.96/28,684.08 = 11,335.68/x
  3. Step 3: Cross multiply
    19,128.96x = 28,684.08 × 11,335.68
  4. Step 4: Simplify right side
    19,128.96x = 325,153,551.97
  5. Step 5: Solve for x
    x = 325,153,551.97/19,128.96
  6. Step 6: Final answer
    x = 16,997.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.