Home / 16,815.62-23,211.69-13,666.34

Finding the Fourth Proportional to 16,815.62, 23,211.69 and 13,666.34

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Solution

The fourth proportional to 16,815.62, 23,211.69 and 13,666.34 is: 18,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.62 : 23,211.69 = 13,666.34 : x
  2. Step 2: Convert to fraction form
    16,815.62/23,211.69 = 13,666.34/x
  3. Step 3: Cross multiply
    16,815.62x = 23,211.69 × 13,666.34
  4. Step 4: Simplify right side
    16,815.62x = 317,218,847.51
  5. Step 5: Solve for x
    x = 317,218,847.51/16,815.62
  6. Step 6: Final answer
    x = 18,864.53

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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.