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Finding the Fourth Proportional to 15,630.21, 21,566.25 and 9,253.64

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Solution

The fourth proportional to 15,630.21, 21,566.25 and 9,253.64 is: 12,767.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.21 : 21,566.25 = 9,253.64 : x
  2. Step 2: Convert to fraction form
    15,630.21/21,566.25 = 9,253.64/x
  3. Step 3: Cross multiply
    15,630.21x = 21,566.25 × 9,253.64
  4. Step 4: Simplify right side
    15,630.21x = 199,566,205.82
  5. Step 5: Solve for x
    x = 199,566,205.82/15,630.21
  6. Step 6: Final answer
    x = 12,767.98

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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.