Home / 15,763.59-21,753.92-8,690.27

Finding the Fourth Proportional to 15,763.59, 21,753.92 and 8,690.27

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Solution

The fourth proportional to 15,763.59, 21,753.92 and 8,690.27 is: 11,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.59 : 21,753.92 = 8,690.27 : x
  2. Step 2: Convert to fraction form
    15,763.59/21,753.92 = 8,690.27/x
  3. Step 3: Cross multiply
    15,763.59x = 21,753.92 × 8,690.27
  4. Step 4: Simplify right side
    15,763.59x = 189,047,351.31
  5. Step 5: Solve for x
    x = 189,047,351.31/15,763.59
  6. Step 6: Final answer
    x = 11,992.66

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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.