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Finding the Fourth Proportional to 15,650.72, 21,598.08 and 9,361.52

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Solution

The fourth proportional to 15,650.72, 21,598.08 and 9,361.52 is: 12,918.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,650.72 : 21,598.08 = 9,361.52 : x
  2. Step 2: Convert to fraction form
    15,650.72/21,598.08 = 9,361.52/x
  3. Step 3: Cross multiply
    15,650.72x = 21,598.08 × 9,361.52
  4. Step 4: Simplify right side
    15,650.72x = 202,190,857.88
  5. Step 5: Solve for x
    x = 202,190,857.88/15,650.72
  6. Step 6: Final answer
    x = 12,918.95

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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.