Home / 13,362.40-18,438.78-7,393.92

Finding the Fourth Proportional to 13,362.40, 18,438.78 and 7,393.92

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Solution

The fourth proportional to 13,362.40, 18,438.78 and 7,393.92 is: 10,202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.40 : 18,438.78 = 7,393.92 : x
  2. Step 2: Convert to fraction form
    13,362.40/18,438.78 = 7,393.92/x
  3. Step 3: Cross multiply
    13,362.40x = 18,438.78 × 7,393.92
  4. Step 4: Simplify right side
    13,362.40x = 136,334,864.22
  5. Step 5: Solve for x
    x = 136,334,864.22/13,362.40
  6. Step 6: Final answer
    x = 10,202.87

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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.