Home / 21,730.53-32,610.40-7,690.50

Finding the Fourth Proportional to 21,730.53, 32,610.40 and 7,690.50

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Solution

The fourth proportional to 21,730.53, 32,610.40 and 7,690.50 is: 11,540.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.53 : 32,610.40 = 7,690.50 : x
  2. Step 2: Convert to fraction form
    21,730.53/32,610.40 = 7,690.50/x
  3. Step 3: Cross multiply
    21,730.53x = 32,610.40 × 7,690.50
  4. Step 4: Simplify right side
    21,730.53x = 250,790,281.20
  5. Step 5: Solve for x
    x = 250,790,281.20/21,730.53
  6. Step 6: Final answer
    x = 11,540.92

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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.