Home / 15,763.23-21,752.84-8,689.68

Finding the Fourth Proportional to 15,763.23, 21,752.84 and 8,689.68

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Solution

The fourth proportional to 15,763.23, 21,752.84 and 8,689.68 is: 11,991.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.23 : 21,752.84 = 8,689.68 : x
  2. Step 2: Convert to fraction form
    15,763.23/21,752.84 = 8,689.68/x
  3. Step 3: Cross multiply
    15,763.23x = 21,752.84 × 8,689.68
  4. Step 4: Simplify right side
    15,763.23x = 189,025,175.24
  5. Step 5: Solve for x
    x = 189,025,175.24/15,763.23
  6. Step 6: Final answer
    x = 11,991.53

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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.