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Finding the Fourth Proportional to 28,342.89, 42,503.58 and 8,346.89

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Solution

The fourth proportional to 28,342.89, 42,503.58 and 8,346.89 is: 12,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.89 : 42,503.58 = 8,346.89 : x
  2. Step 2: Convert to fraction form
    28,342.89/42,503.58 = 8,346.89/x
  3. Step 3: Cross multiply
    28,342.89x = 42,503.58 × 8,346.89
  4. Step 4: Simplify right side
    28,342.89x = 354,772,494.35
  5. Step 5: Solve for x
    x = 354,772,494.35/28,342.89
  6. Step 6: Final answer
    x = 12,517.16

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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.