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Finding the Fourth Proportional to 13,337.90, 18,406.02 and 7,369.50

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Solution

The fourth proportional to 13,337.90, 18,406.02 and 7,369.50 is: 10,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,337.90 : 18,406.02 = 7,369.50 : x
  2. Step 2: Convert to fraction form
    13,337.90/18,406.02 = 7,369.50/x
  3. Step 3: Cross multiply
    13,337.90x = 18,406.02 × 7,369.50
  4. Step 4: Simplify right side
    13,337.90x = 135,643,164.39
  5. Step 5: Solve for x
    x = 135,643,164.39/13,337.90
  6. Step 6: Final answer
    x = 10,169.76

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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.