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Finding the Fourth Proportional to 9,403.20, 14,104.80 and 8,539.20

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Solution

The fourth proportional to 9,403.20, 14,104.80 and 8,539.20 is: 12,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.20 : 14,104.80 = 8,539.20 : x
  2. Step 2: Convert to fraction form
    9,403.20/14,104.80 = 8,539.20/x
  3. Step 3: Cross multiply
    9,403.20x = 14,104.80 × 8,539.20
  4. Step 4: Simplify right side
    9,403.20x = 120,443,708.16
  5. Step 5: Solve for x
    x = 120,443,708.16/9,403.20
  6. Step 6: Final answer
    x = 12,808.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.