Home / 15,866.72-21,892.92-9,579.44

Finding the Fourth Proportional to 15,866.72, 21,892.92 and 9,579.44

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Solution

The fourth proportional to 15,866.72, 21,892.92 and 9,579.44 is: 13,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,866.72 : 21,892.92 = 9,579.44 : x
  2. Step 2: Convert to fraction form
    15,866.72/21,892.92 = 9,579.44/x
  3. Step 3: Cross multiply
    15,866.72x = 21,892.92 × 9,579.44
  4. Step 4: Simplify right side
    15,866.72x = 209,721,913.56
  5. Step 5: Solve for x
    x = 209,721,913.56/15,866.72
  6. Step 6: Final answer
    x = 13,217.72

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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.