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Finding the Fourth Proportional to 28,129.50, 38,823.57 and 16,951.50

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Solution

The fourth proportional to 28,129.50, 38,823.57 and 16,951.50 is: 23,396.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.50 : 38,823.57 = 16,951.50 : x
  2. Step 2: Convert to fraction form
    28,129.50/38,823.57 = 16,951.50/x
  3. Step 3: Cross multiply
    28,129.50x = 38,823.57 × 16,951.50
  4. Step 4: Simplify right side
    28,129.50x = 658,117,746.86
  5. Step 5: Solve for x
    x = 658,117,746.86/28,129.50
  6. Step 6: Final answer
    x = 23,396.00

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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.