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Finding the Fourth Proportional to 13,342.71, 18,412.98 and 7,374.36

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Solution

The fourth proportional to 13,342.71, 18,412.98 and 7,374.36 is: 10,176.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.71 : 18,412.98 = 7,374.36 : x
  2. Step 2: Convert to fraction form
    13,342.71/18,412.98 = 7,374.36/x
  3. Step 3: Cross multiply
    13,342.71x = 18,412.98 × 7,374.36
  4. Step 4: Simplify right side
    13,342.71x = 135,783,943.19
  5. Step 5: Solve for x
    x = 135,783,943.19/13,342.71
  6. Step 6: Final answer
    x = 10,176.64

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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.