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Finding the Fourth Proportional to 15,646.63, 21,594.15 and 8,933.21

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Solution

The fourth proportional to 15,646.63, 21,594.15 and 8,933.21 is: 12,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.63 : 21,594.15 = 8,933.21 : x
  2. Step 2: Convert to fraction form
    15,646.63/21,594.15 = 8,933.21/x
  3. Step 3: Cross multiply
    15,646.63x = 21,594.15 × 8,933.21
  4. Step 4: Simplify right side
    15,646.63x = 192,905,076.72
  5. Step 5: Solve for x
    x = 192,905,076.72/15,646.63
  6. Step 6: Final answer
    x = 12,328.86

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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.