Home / 15,442.15-23,145.15-13,690.50

Finding the Fourth Proportional to 15,442.15, 23,145.15 and 13,690.50

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Solution

The fourth proportional to 15,442.15, 23,145.15 and 13,690.50 is: 20,519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.15 : 23,145.15 = 13,690.50 : x
  2. Step 2: Convert to fraction form
    15,442.15/23,145.15 = 13,690.50/x
  3. Step 3: Cross multiply
    15,442.15x = 23,145.15 × 13,690.50
  4. Step 4: Simplify right side
    15,442.15x = 316,868,676.08
  5. Step 5: Solve for x
    x = 316,868,676.08/15,442.15
  6. Step 6: Final answer
    x = 20,519.73

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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.