Home / 16,992.56-23,440.28-15,789.81

Finding the Fourth Proportional to 16,992.56, 23,440.28 and 15,789.81

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Solution

The fourth proportional to 16,992.56, 23,440.28 and 15,789.81 is: 21,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,992.56 : 23,440.28 = 15,789.81 : x
  2. Step 2: Convert to fraction form
    16,992.56/23,440.28 = 15,789.81/x
  3. Step 3: Cross multiply
    16,992.56x = 23,440.28 × 15,789.81
  4. Step 4: Simplify right side
    16,992.56x = 370,117,567.55
  5. Step 5: Solve for x
    x = 370,117,567.55/16,992.56
  6. Step 6: Final answer
    x = 21,781.16

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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.