Home / 16,815.40-23,205.41-9,261.76

Finding the Fourth Proportional to 16,815.40, 23,205.41 and 9,261.76

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Solution

The fourth proportional to 16,815.40, 23,205.41 and 9,261.76 is: 12,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.40 : 23,205.41 = 9,261.76 : x
  2. Step 2: Convert to fraction form
    16,815.40/23,205.41 = 9,261.76/x
  3. Step 3: Cross multiply
    16,815.40x = 23,205.41 × 9,261.76
  4. Step 4: Simplify right side
    16,815.40x = 214,922,859.84
  5. Step 5: Solve for x
    x = 214,922,859.84/16,815.40
  6. Step 6: Final answer
    x = 12,781.31

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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.