Home / 15,133.64-20,883.23-8,418.18

Finding the Fourth Proportional to 15,133.64, 20,883.23 and 8,418.18

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Solution

The fourth proportional to 15,133.64, 20,883.23 and 8,418.18 is: 11,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.64 : 20,883.23 = 8,418.18 : x
  2. Step 2: Convert to fraction form
    15,133.64/20,883.23 = 8,418.18/x
  3. Step 3: Cross multiply
    15,133.64x = 20,883.23 × 8,418.18
  4. Step 4: Simplify right side
    15,133.64x = 175,798,786.79
  5. Step 5: Solve for x
    x = 175,798,786.79/15,133.64
  6. Step 6: Final answer
    x = 11,616.43

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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.