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Finding the Fourth Proportional to 13,266.60, 18,308.22 and 7,298.60

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Solution

The fourth proportional to 13,266.60, 18,308.22 and 7,298.60 is: 10,072.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.60 : 18,308.22 = 7,298.60 : x
  2. Step 2: Convert to fraction form
    13,266.60/18,308.22 = 7,298.60/x
  3. Step 3: Cross multiply
    13,266.60x = 18,308.22 × 7,298.60
  4. Step 4: Simplify right side
    13,266.60x = 133,624,374.49
  5. Step 5: Solve for x
    x = 133,624,374.49/13,266.60
  6. Step 6: Final answer
    x = 10,072.24

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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.