Home / 21,424.48-32,139.78-6,634.72

Finding the Fourth Proportional to 21,424.48, 32,139.78 and 6,634.72

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Solution

The fourth proportional to 21,424.48, 32,139.78 and 6,634.72 is: 9,953.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.48 : 32,139.78 = 6,634.72 : x
  2. Step 2: Convert to fraction form
    21,424.48/32,139.78 = 6,634.72/x
  3. Step 3: Cross multiply
    21,424.48x = 32,139.78 × 6,634.72
  4. Step 4: Simplify right side
    21,424.48x = 213,238,441.16
  5. Step 5: Solve for x
    x = 213,238,441.16/21,424.48
  6. Step 6: Final answer
    x = 9,953.03

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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.