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Finding the Fourth Proportional to 13,393.71, 18,482.99 and 7,425.36

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Solution

The fourth proportional to 13,393.71, 18,482.99 and 7,425.36 is: 10,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.71 : 18,482.99 = 7,425.36 : x
  2. Step 2: Convert to fraction form
    13,393.71/18,482.99 = 7,425.36/x
  3. Step 3: Cross multiply
    13,393.71x = 18,482.99 × 7,425.36
  4. Step 4: Simplify right side
    13,393.71x = 137,242,817.50
  5. Step 5: Solve for x
    x = 137,242,817.50/13,393.71
  6. Step 6: Final answer
    x = 10,246.81

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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.