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Finding the Fourth Proportional to 13,393.70, 18,484.34 and 7,425.94

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Solution

The fourth proportional to 13,393.70, 18,484.34 and 7,425.94 is: 10,248.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.70 : 18,484.34 = 7,425.94 : x
  2. Step 2: Convert to fraction form
    13,393.70/18,484.34 = 7,425.94/x
  3. Step 3: Cross multiply
    13,393.70x = 18,484.34 × 7,425.94
  4. Step 4: Simplify right side
    13,393.70x = 137,263,599.78
  5. Step 5: Solve for x
    x = 137,263,599.78/13,393.70
  6. Step 6: Final answer
    x = 10,248.37

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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.