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Finding the Fourth Proportional to 13,395.08, 18,485 and 7,426.60

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Solution

The fourth proportional to 13,395.08, 18,485 and 7,426.60 is: 10,248.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.08 : 18,485 = 7,426.60 : x
  2. Step 2: Convert to fraction form
    13,395.08/18,485 = 7,426.60/x
  3. Step 3: Cross multiply
    13,395.08x = 18,485 × 7,426.60
  4. Step 4: Simplify right side
    13,395.08x = 137,280,701
  5. Step 5: Solve for x
    x = 137,280,701/13,395.08
  6. Step 6: Final answer
    x = 10,248.59

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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.