Home / 19,653.84-27,117.60-12,481.20

Finding the Fourth Proportional to 19,653.84, 27,117.60 and 12,481.20

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Solution

The fourth proportional to 19,653.84, 27,117.60 and 12,481.20 is: 17,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,653.84 : 27,117.60 = 12,481.20 : x
  2. Step 2: Convert to fraction form
    19,653.84/27,117.60 = 12,481.20/x
  3. Step 3: Cross multiply
    19,653.84x = 27,117.60 × 12,481.20
  4. Step 4: Simplify right side
    19,653.84x = 338,460,189.12
  5. Step 5: Solve for x
    x = 338,460,189.12/19,653.84
  6. Step 6: Final answer
    x = 17,221.07

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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.