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Finding the Fourth Proportional to 28,337.88, 42,513.54 and 8,617.56

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Solution

The fourth proportional to 28,337.88, 42,513.54 and 8,617.56 is: 12,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.88 : 42,513.54 = 8,617.56 : x
  2. Step 2: Convert to fraction form
    28,337.88/42,513.54 = 8,617.56/x
  3. Step 3: Cross multiply
    28,337.88x = 42,513.54 × 8,617.56
  4. Step 4: Simplify right side
    28,337.88x = 366,362,981.76
  5. Step 5: Solve for x
    x = 366,362,981.76/28,337.88
  6. Step 6: Final answer
    x = 12,928.38

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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.