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Finding the Fourth Proportional to 15,263.58, 21,063.38 and 8,891.30

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Solution

The fourth proportional to 15,263.58, 21,063.38 and 8,891.30 is: 12,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,263.58 : 21,063.38 = 8,891.30 : x
  2. Step 2: Convert to fraction form
    15,263.58/21,063.38 = 8,891.30/x
  3. Step 3: Cross multiply
    15,263.58x = 21,063.38 × 8,891.30
  4. Step 4: Simplify right side
    15,263.58x = 187,280,830.59
  5. Step 5: Solve for x
    x = 187,280,830.59/15,263.58
  6. Step 6: Final answer
    x = 12,269.78

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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.