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Finding the Fourth Proportional to 9,069.80, 13,607.90 and 8,749.80

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Solution

The fourth proportional to 9,069.80, 13,607.90 and 8,749.80 is: 13,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,069.80 : 13,607.90 = 8,749.80 : x
  2. Step 2: Convert to fraction form
    9,069.80/13,607.90 = 8,749.80/x
  3. Step 3: Cross multiply
    9,069.80x = 13,607.90 × 8,749.80
  4. Step 4: Simplify right side
    9,069.80x = 119,066,403.42
  5. Step 5: Solve for x
    x = 119,066,403.42/9,069.80
  6. Step 6: Final answer
    x = 13,127.79

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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.