Home / 13,360.68-18,436.24-7,391.40

Finding the Fourth Proportional to 13,360.68, 18,436.24 and 7,391.40

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Solution

The fourth proportional to 13,360.68, 18,436.24 and 7,391.40 is: 10,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.68 : 18,436.24 = 7,391.40 : x
  2. Step 2: Convert to fraction form
    13,360.68/18,436.24 = 7,391.40/x
  3. Step 3: Cross multiply
    13,360.68x = 18,436.24 × 7,391.40
  4. Step 4: Simplify right side
    13,360.68x = 136,269,624.34
  5. Step 5: Solve for x
    x = 136,269,624.34/13,360.68
  6. Step 6: Final answer
    x = 10,199.30

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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.