Home / 20,199.96-27,880.38-11,707.92

Finding the Fourth Proportional to 20,199.96, 27,880.38 and 11,707.92

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Solution

The fourth proportional to 20,199.96, 27,880.38 and 11,707.92 is: 16,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.96 : 27,880.38 = 11,707.92 : x
  2. Step 2: Convert to fraction form
    20,199.96/27,880.38 = 11,707.92/x
  3. Step 3: Cross multiply
    20,199.96x = 27,880.38 × 11,707.92
  4. Step 4: Simplify right side
    20,199.96x = 326,421,258.61
  5. Step 5: Solve for x
    x = 326,421,258.61/20,199.96
  6. Step 6: Final answer
    x = 16,159.50

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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.