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Finding the Fourth Proportional to 13,583.81, 18,744.86 and 7,614.38

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Solution

The fourth proportional to 13,583.81, 18,744.86 and 7,614.38 is: 10,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.81 : 18,744.86 = 7,614.38 : x
  2. Step 2: Convert to fraction form
    13,583.81/18,744.86 = 7,614.38/x
  3. Step 3: Cross multiply
    13,583.81x = 18,744.86 × 7,614.38
  4. Step 4: Simplify right side
    13,583.81x = 142,730,412.40
  5. Step 5: Solve for x
    x = 142,730,412.40/13,583.81
  6. Step 6: Final answer
    x = 10,507.40

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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.