Home / 13,399.88-18,472.71-9,621.84

Finding the Fourth Proportional to 13,399.88, 18,472.71 and 9,621.84

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Solution

The fourth proportional to 13,399.88, 18,472.71 and 9,621.84 is: 13,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.88 : 18,472.71 = 9,621.84 : x
  2. Step 2: Convert to fraction form
    13,399.88/18,472.71 = 9,621.84/x
  3. Step 3: Cross multiply
    13,399.88x = 18,472.71 × 9,621.84
  4. Step 4: Simplify right side
    13,399.88x = 177,741,407.31
  5. Step 5: Solve for x
    x = 177,741,407.31/13,399.88
  6. Step 6: Final answer
    x = 13,264.40

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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.