Home / 15,133.21-20,883.24-8,418.61

Finding the Fourth Proportional to 15,133.21, 20,883.24 and 8,418.61

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Solution

The fourth proportional to 15,133.21, 20,883.24 and 8,418.61 is: 11,617.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.21 : 20,883.24 = 8,418.61 : x
  2. Step 2: Convert to fraction form
    15,133.21/20,883.24 = 8,418.61/x
  3. Step 3: Cross multiply
    15,133.21x = 20,883.24 × 8,418.61
  4. Step 4: Simplify right side
    15,133.21x = 175,807,853.10
  5. Step 5: Solve for x
    x = 175,807,853.10/15,133.21
  6. Step 6: Final answer
    x = 11,617.35

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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.