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Finding the Fourth Proportional to 28,230, 38,960.60 and 16,296.52

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Solution

The fourth proportional to 28,230, 38,960.60 and 16,296.52 is: 22,491.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230 : 38,960.60 = 16,296.52 : x
  2. Step 2: Convert to fraction form
    28,230/38,960.60 = 16,296.52/x
  3. Step 3: Cross multiply
    28,230x = 38,960.60 × 16,296.52
  4. Step 4: Simplify right side
    28,230x = 634,922,197.11
  5. Step 5: Solve for x
    x = 634,922,197.11/28,230
  6. Step 6: Final answer
    x = 22,491.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.