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Finding the Fourth Proportional to 9,000.19, 13,455.87 and 7,628.86

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Solution

The fourth proportional to 9,000.19, 13,455.87 and 7,628.86 is: 11,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.19 : 13,455.87 = 7,628.86 : x
  2. Step 2: Convert to fraction form
    9,000.19/13,455.87 = 7,628.86/x
  3. Step 3: Cross multiply
    9,000.19x = 13,455.87 × 7,628.86
  4. Step 4: Simplify right side
    9,000.19x = 102,652,948.41
  5. Step 5: Solve for x
    x = 102,652,948.41/9,000.19
  6. Step 6: Final answer
    x = 11,405.64

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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.