Home / 19,928.96-27,495.38-12,860.08

Finding the Fourth Proportional to 19,928.96, 27,495.38 and 12,860.08

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Solution

The fourth proportional to 19,928.96, 27,495.38 and 12,860.08 is: 17,742.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.96 : 27,495.38 = 12,860.08 : x
  2. Step 2: Convert to fraction form
    19,928.96/27,495.38 = 12,860.08/x
  3. Step 3: Cross multiply
    19,928.96x = 27,495.38 × 12,860.08
  4. Step 4: Simplify right side
    19,928.96x = 353,592,786.43
  5. Step 5: Solve for x
    x = 353,592,786.43/19,928.96
  6. Step 6: Final answer
    x = 17,742.66

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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.