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Finding the Fourth Proportional to 9,073.80, 13,615.02 and 7,129.80

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Solution

The fourth proportional to 9,073.80, 13,615.02 and 7,129.80 is: 10,698.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,073.80 : 13,615.02 = 7,129.80 : x
  2. Step 2: Convert to fraction form
    9,073.80/13,615.02 = 7,129.80/x
  3. Step 3: Cross multiply
    9,073.80x = 13,615.02 × 7,129.80
  4. Step 4: Simplify right side
    9,073.80x = 97,072,369.60
  5. Step 5: Solve for x
    x = 97,072,369.60/9,073.80
  6. Step 6: Final answer
    x = 10,698.09

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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.