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Finding the Fourth Proportional to 15,436.60, 21,302.44 and 8,363

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Solution

The fourth proportional to 15,436.60, 21,302.44 and 8,363 is: 11,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.60 : 21,302.44 = 8,363 : x
  2. Step 2: Convert to fraction form
    15,436.60/21,302.44 = 8,363/x
  3. Step 3: Cross multiply
    15,436.60x = 21,302.44 × 8,363
  4. Step 4: Simplify right side
    15,436.60x = 178,152,305.72
  5. Step 5: Solve for x
    x = 178,152,305.72/15,436.60
  6. Step 6: Final answer
    x = 11,540.90

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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.