Home / 15,883.38-21,919.56-9,168.89

Finding the Fourth Proportional to 15,883.38, 21,919.56 and 9,168.89

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Solution

The fourth proportional to 15,883.38, 21,919.56 and 9,168.89 is: 12,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.38 : 21,919.56 = 9,168.89 : x
  2. Step 2: Convert to fraction form
    15,883.38/21,919.56 = 9,168.89/x
  3. Step 3: Cross multiply
    15,883.38x = 21,919.56 × 9,168.89
  4. Step 4: Simplify right side
    15,883.38x = 200,977,924.89
  5. Step 5: Solve for x
    x = 200,977,924.89/15,883.38
  6. Step 6: Final answer
    x = 12,653.35

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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.