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Finding the Fourth Proportional to 9,365.56, 12,941.58 and 8,909.98

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Solution

The fourth proportional to 9,365.56, 12,941.58 and 8,909.98 is: 12,312.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.56 : 12,941.58 = 8,909.98 : x
  2. Step 2: Convert to fraction form
    9,365.56/12,941.58 = 8,909.98/x
  3. Step 3: Cross multiply
    9,365.56x = 12,941.58 × 8,909.98
  4. Step 4: Simplify right side
    9,365.56x = 115,309,218.97
  5. Step 5: Solve for x
    x = 115,309,218.97/9,365.56
  6. Step 6: Final answer
    x = 12,312.05

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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.