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Finding the Fourth Proportional to 28,635.94, 42,974.72 and 21,624.63

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Solution

The fourth proportional to 28,635.94, 42,974.72 and 21,624.63 is: 32,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.94 : 42,974.72 = 21,624.63 : x
  2. Step 2: Convert to fraction form
    28,635.94/42,974.72 = 21,624.63/x
  3. Step 3: Cross multiply
    28,635.94x = 42,974.72 × 21,624.63
  4. Step 4: Simplify right side
    28,635.94x = 929,312,419.35
  5. Step 5: Solve for x
    x = 929,312,419.35/28,635.94
  6. Step 6: Final answer
    x = 32,452.66

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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.