Home / 15,334.80-21,164.27-8,620.98

Finding the Fourth Proportional to 15,334.80, 21,164.27 and 8,620.98

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Solution

The fourth proportional to 15,334.80, 21,164.27 and 8,620.98 is: 11,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.80 : 21,164.27 = 8,620.98 : x
  2. Step 2: Convert to fraction form
    15,334.80/21,164.27 = 8,620.98/x
  3. Step 3: Cross multiply
    15,334.80x = 21,164.27 × 8,620.98
  4. Step 4: Simplify right side
    15,334.80x = 182,456,705.28
  5. Step 5: Solve for x
    x = 182,456,705.28/15,334.80
  6. Step 6: Final answer
    x = 11,898.21

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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.