Home / 19,965.52-29,956.96-10,720.72

Finding the Fourth Proportional to 19,965.52, 29,956.96 and 10,720.72

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Solution

The fourth proportional to 19,965.52, 29,956.96 and 10,720.72 is: 16,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.52 : 29,956.96 = 10,720.72 : x
  2. Step 2: Convert to fraction form
    19,965.52/29,956.96 = 10,720.72/x
  3. Step 3: Cross multiply
    19,965.52x = 29,956.96 × 10,720.72
  4. Step 4: Simplify right side
    19,965.52x = 321,160,180.21
  5. Step 5: Solve for x
    x = 321,160,180.21/19,965.52
  6. Step 6: Final answer
    x = 16,085.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.