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Finding the Fourth Proportional to 13,341.70, 18,412.71 and 7,374.53

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Solution

The fourth proportional to 13,341.70, 18,412.71 and 7,374.53 is: 10,177.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,341.70 : 18,412.71 = 7,374.53 : x
  2. Step 2: Convert to fraction form
    13,341.70/18,412.71 = 7,374.53/x
  3. Step 3: Cross multiply
    13,341.70x = 18,412.71 × 7,374.53
  4. Step 4: Simplify right side
    13,341.70x = 135,784,997.08
  5. Step 5: Solve for x
    x = 135,784,997.08/13,341.70
  6. Step 6: Final answer
    x = 10,177.49

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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.