Home / 16,871.60-23,164.78-13,703.60

Finding the Fourth Proportional to 16,871.60, 23,164.78 and 13,703.60

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Solution

The fourth proportional to 16,871.60, 23,164.78 and 13,703.60 is: 18,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,871.60 : 23,164.78 = 13,703.60 : x
  2. Step 2: Convert to fraction form
    16,871.60/23,164.78 = 13,703.60/x
  3. Step 3: Cross multiply
    16,871.60x = 23,164.78 × 13,703.60
  4. Step 4: Simplify right side
    16,871.60x = 317,440,879.21
  5. Step 5: Solve for x
    x = 317,440,879.21/16,871.60
  6. Step 6: Final answer
    x = 18,815.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.