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Finding the Fourth Proportional to 13,342.54, 18,412.50 and 7,374.10

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Solution

The fourth proportional to 13,342.54, 18,412.50 and 7,374.10 is: 10,176.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.54 : 18,412.50 = 7,374.10 : x
  2. Step 2: Convert to fraction form
    13,342.54/18,412.50 = 7,374.10/x
  3. Step 3: Cross multiply
    13,342.54x = 18,412.50 × 7,374.10
  4. Step 4: Simplify right side
    13,342.54x = 135,775,616.25
  5. Step 5: Solve for x
    x = 135,775,616.25/13,342.54
  6. Step 6: Final answer
    x = 10,176.14

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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.