Home / 21,429.86-32,146.32-6,636.88

Finding the Fourth Proportional to 21,429.86, 32,146.32 and 6,636.88

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Solution

The fourth proportional to 21,429.86, 32,146.32 and 6,636.88 is: 9,955.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.86 : 32,146.32 = 6,636.88 : x
  2. Step 2: Convert to fraction form
    21,429.86/32,146.32 = 6,636.88/x
  3. Step 3: Cross multiply
    21,429.86x = 32,146.32 × 6,636.88
  4. Step 4: Simplify right side
    21,429.86x = 213,351,268.28
  5. Step 5: Solve for x
    x = 213,351,268.28/21,429.86
  6. Step 6: Final answer
    x = 9,955.79

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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.