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Finding the Fourth Proportional to 21,955.67, 32,933.86 and 7,925.76

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Solution

The fourth proportional to 21,955.67, 32,933.86 and 7,925.76 is: 11,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.67 : 32,933.86 = 7,925.76 : x
  2. Step 2: Convert to fraction form
    21,955.67/32,933.86 = 7,925.76/x
  3. Step 3: Cross multiply
    21,955.67x = 32,933.86 × 7,925.76
  4. Step 4: Simplify right side
    21,955.67x = 261,025,850.42
  5. Step 5: Solve for x
    x = 261,025,850.42/21,955.67
  6. Step 6: Final answer
    x = 11,888.77

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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.