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Finding the Fourth Proportional to 9,765.63, 13,484.34 and 9,019.29

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Solution

The fourth proportional to 9,765.63, 13,484.34 and 9,019.29 is: 12,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,765.63 : 13,484.34 = 9,019.29 : x
  2. Step 2: Convert to fraction form
    9,765.63/13,484.34 = 9,019.29/x
  3. Step 3: Cross multiply
    9,765.63x = 13,484.34 × 9,019.29
  4. Step 4: Simplify right side
    9,765.63x = 121,619,172.92
  5. Step 5: Solve for x
    x = 121,619,172.92/9,765.63
  6. Step 6: Final answer
    x = 12,453.80

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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.