Home / 19,639.48-27,100.36-11,680.64

Finding the Fourth Proportional to 19,639.48, 27,100.36 and 11,680.64

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Solution

The fourth proportional to 19,639.48, 27,100.36 and 11,680.64 is: 16,118.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.48 : 27,100.36 = 11,680.64 : x
  2. Step 2: Convert to fraction form
    19,639.48/27,100.36 = 11,680.64/x
  3. Step 3: Cross multiply
    19,639.48x = 27,100.36 × 11,680.64
  4. Step 4: Simplify right side
    19,639.48x = 316,549,549.03
  5. Step 5: Solve for x
    x = 316,549,549.03/19,639.48
  6. Step 6: Final answer
    x = 16,118.02

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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.