Home / 19,815.65-27,338.58-11,311.64

Finding the Fourth Proportional to 19,815.65, 27,338.58 and 11,311.64

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Solution

The fourth proportional to 19,815.65, 27,338.58 and 11,311.64 is: 15,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.65 : 27,338.58 = 11,311.64 : x
  2. Step 2: Convert to fraction form
    19,815.65/27,338.58 = 11,311.64/x
  3. Step 3: Cross multiply
    19,815.65x = 27,338.58 × 11,311.64
  4. Step 4: Simplify right side
    19,815.65x = 309,244,038.38
  5. Step 5: Solve for x
    x = 309,244,038.38/19,815.65
  6. Step 6: Final answer
    x = 15,606.05

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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.