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Finding the Fourth Proportional to 21,954.95, 32,950.80 and 11,428.59

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Solution

The fourth proportional to 21,954.95, 32,950.80 and 11,428.59 is: 17,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.95 : 32,950.80 = 11,428.59 : x
  2. Step 2: Convert to fraction form
    21,954.95/32,950.80 = 11,428.59/x
  3. Step 3: Cross multiply
    21,954.95x = 32,950.80 × 11,428.59
  4. Step 4: Simplify right side
    21,954.95x = 376,581,306.94
  5. Step 5: Solve for x
    x = 376,581,306.94/21,954.95
  6. Step 6: Final answer
    x = 17,152.46

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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.