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Finding the Fourth Proportional to 12,503.32, 18,754.86 and 4,712.68

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Solution

The fourth proportional to 12,503.32, 18,754.86 and 4,712.68 is: 7,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.32 : 18,754.86 = 4,712.68 : x
  2. Step 2: Convert to fraction form
    12,503.32/18,754.86 = 4,712.68/x
  3. Step 3: Cross multiply
    12,503.32x = 18,754.86 × 4,712.68
  4. Step 4: Simplify right side
    12,503.32x = 88,385,653.62
  5. Step 5: Solve for x
    x = 88,385,653.62/12,503.32
  6. Step 6: Final answer
    x = 7,068.97

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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.