Home / 21,431.36-32,135.12-6,636.08

Finding the Fourth Proportional to 21,431.36, 32,135.12 and 6,636.08

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Solution

The fourth proportional to 21,431.36, 32,135.12 and 6,636.08 is: 9,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.36 : 32,135.12 = 6,636.08 : x
  2. Step 2: Convert to fraction form
    21,431.36/32,135.12 = 6,636.08/x
  3. Step 3: Cross multiply
    21,431.36x = 32,135.12 × 6,636.08
  4. Step 4: Simplify right side
    21,431.36x = 213,251,227.13
  5. Step 5: Solve for x
    x = 213,251,227.13/21,431.36
  6. Step 6: Final answer
    x = 9,950.43

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1.5x scale

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.