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Finding the Fourth Proportional to 9,636.76, 14,359.92 and 8,655.64

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Solution

The fourth proportional to 9,636.76, 14,359.92 and 8,655.64 is: 12,897.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,636.76 : 14,359.92 = 8,655.64 : x
  2. Step 2: Convert to fraction form
    9,636.76/14,359.92 = 8,655.64/x
  3. Step 3: Cross multiply
    9,636.76x = 14,359.92 × 8,655.64
  4. Step 4: Simplify right side
    9,636.76x = 124,294,297.95
  5. Step 5: Solve for x
    x = 124,294,297.95/9,636.76
  6. Step 6: Final answer
    x = 12,897.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.