Home / 19,690.12-29,546.22-10,455.88

Finding the Fourth Proportional to 19,690.12, 29,546.22 and 10,455.88

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Solution

The fourth proportional to 19,690.12, 29,546.22 and 10,455.88 is: 15,689.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.12 : 29,546.22 = 10,455.88 : x
  2. Step 2: Convert to fraction form
    19,690.12/29,546.22 = 10,455.88/x
  3. Step 3: Cross multiply
    19,690.12x = 29,546.22 × 10,455.88
  4. Step 4: Simplify right side
    19,690.12x = 308,931,730.77
  5. Step 5: Solve for x
    x = 308,931,730.77/19,690.12
  6. Step 6: Final answer
    x = 15,689.68

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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.